diff --git a/UPGRADE-4.0.md b/UPGRADE-4.0.md
index fe43d0cf9973..fbe988fa3497 100644
--- a/UPGRADE-4.0.md
+++ b/UPGRADE-4.0.md
@@ -230,7 +230,7 @@ DependencyInjection
    supported.
 
  * The ``strict`` attribute in service arguments has been removed.
-   The attribute is ignored since 3.0, so you can simply remove it.
+   The attribute is ignored since 3.0, you can remove it.
 
  * Top-level anonymous services in XML are no longer supported.
 
diff --git a/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php b/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php
index 860a6c7c20d0..7ac1856114d7 100644
--- a/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php
+++ b/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php
@@ -24,8 +24,8 @@
  * The compiler pass is meant to register the mappings with the metadata
  * chain driver corresponding to one of the object managers.
  *
- * For concrete implementations that are easy to use, see the
- * RegisterXyMappingsPass classes in the DoctrineBundle resp.
+ * For concrete implementations, see the RegisterXyMappingsPass classes
+ * in the DoctrineBundle resp.
  * DoctrineMongodbBundle, DoctrineCouchdbBundle and DoctrinePhpcrBundle.
  *
  * @author David Buchmann <david@liip.ch>
diff --git a/src/Symfony/Bridge/Doctrine/Security/User/EntityUserProvider.php b/src/Symfony/Bridge/Doctrine/Security/User/EntityUserProvider.php
index 8923aa21aa29..7c630b4e9839 100644
--- a/src/Symfony/Bridge/Doctrine/Security/User/EntityUserProvider.php
+++ b/src/Symfony/Bridge/Doctrine/Security/User/EntityUserProvider.php
@@ -20,7 +20,7 @@
 /**
  * Wrapper around a Doctrine ObjectManager.
  *
- * Provides easy to use provisioning for Doctrine entity users.
+ * Provides provisioning for Doctrine entity users.
  *
  * @author Fabien Potencier <fabien@symfony.com>
  * @author Johannes M. Schmitt <schmittjoh@gmail.com>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/Descriptor.php b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/Descriptor.php
index fda0fb28d303..c7b669fda022 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/Descriptor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/Descriptor.php
@@ -225,7 +225,7 @@ protected function resolveServiceDefinition(ContainerBuilder $builder, $serviceI
             return $builder->getDefinition($serviceId);
         }
 
-        // Some service IDs don't have a Definition, they're simply an Alias
+        // Some service IDs don't have a Definition, they're aliases
         if ($builder->hasAlias($serviceId)) {
             return $builder->getAlias($serviceId);
         }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CacheClearCommand/CacheClearCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CacheClearCommand/CacheClearCommandTest.php
index f211f283869e..c2cded7ab096 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CacheClearCommand/CacheClearCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CacheClearCommand/CacheClearCommandTest.php
@@ -54,7 +54,7 @@ public function testCacheIsFreshAfterCacheClearedWithWarmup()
         // Ensure that all *.meta files are fresh
         $finder = new Finder();
         $metaFiles = $finder->files()->in($this->kernel->getCacheDir())->name('*.php.meta');
-        // simply check that cache is warmed up
+        // check that cache is warmed up
         $this->assertNotEmpty($metaFiles);
         $configCacheFactory = new ConfigCacheFactory(true);
 
diff --git a/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php b/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
index 9837e5d88321..115054a24fb0 100644
--- a/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
+++ b/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
@@ -332,10 +332,10 @@ public function performNoDeepMerging()
      * Allows extra config keys to be specified under an array without
      * throwing an exception.
      *
-     * Those config values are simply ignored and removed from the
-     * resulting array. This should be used only in special cases where
-     * you want to send an entire configuration array through a special
-     * tree that processes only part of the array.
+     * Those config values are ignored and removed from the resulting
+     * array. This should be used only in special cases where you want
+     * to send an entire configuration array through a special tree that
+     * processes only part of the array.
      *
      * @param bool $remove Whether to remove the extra keys
      *
diff --git a/src/Symfony/Component/Config/Definition/PrototypedArrayNode.php b/src/Symfony/Component/Config/Definition/PrototypedArrayNode.php
index f00cfcaa8349..eb885a77ff42 100644
--- a/src/Symfony/Component/Config/Definition/PrototypedArrayNode.php
+++ b/src/Symfony/Component/Config/Definition/PrototypedArrayNode.php
@@ -301,7 +301,7 @@ protected function mergeValues($leftSide, $rightSide)
         }
 
         foreach ($rightSide as $k => $v) {
-            // prototype, and key is irrelevant, so simply append the element
+            // prototype, and key is irrelevant, append the element
             if (null === $this->keyAttribute) {
                 $leftSide[] = $v;
                 continue;
diff --git a/src/Symfony/Component/DependencyInjection/LazyProxy/Instantiator/RealServiceInstantiator.php b/src/Symfony/Component/DependencyInjection/LazyProxy/Instantiator/RealServiceInstantiator.php
index 3b0b57ef0f6b..532e768684f3 100644
--- a/src/Symfony/Component/DependencyInjection/LazyProxy/Instantiator/RealServiceInstantiator.php
+++ b/src/Symfony/Component/DependencyInjection/LazyProxy/Instantiator/RealServiceInstantiator.php
@@ -17,7 +17,7 @@
 /**
  * {@inheritdoc}
  *
- * Noop proxy instantiator - simply produces the real service instead of a proxy instance.
+ * Noop proxy instantiator - produces the real service instead of a proxy instance.
  *
  * @author Marco Pivetta <ocramius@gmail.com>
  */
diff --git a/src/Symfony/Component/DomCrawler/Crawler.php b/src/Symfony/Component/DomCrawler/Crawler.php
index b2355dedf9a6..68d7c3dafce8 100644
--- a/src/Symfony/Component/DomCrawler/Crawler.php
+++ b/src/Symfony/Component/DomCrawler/Crawler.php
@@ -968,7 +968,7 @@ private function relativize($xpath)
         $expressions = [];
 
         // An expression which will never match to replace expressions which cannot match in the crawler
-        // We cannot simply drop
+        // We cannot drop
         $nonMatchingExpression = 'a[name() = "b"]';
 
         $xpathLen = \strlen($xpath);
diff --git a/src/Symfony/Component/Finder/Finder.php b/src/Symfony/Component/Finder/Finder.php
index 839f244976b5..133c4b8c50b1 100644
--- a/src/Symfony/Component/Finder/Finder.php
+++ b/src/Symfony/Component/Finder/Finder.php
@@ -29,7 +29,7 @@
  *
  * All rules may be invoked several times.
  *
- * All methods return the current Finder object to allow easy chaining:
+ * All methods return the current Finder object to allow chaining:
  *
  *     $finder = Finder::create()->files()->name('*.php')->in(__DIR__);
  *
diff --git a/src/Symfony/Component/Form/ChoiceList/ArrayChoiceList.php b/src/Symfony/Component/Form/ChoiceList/ArrayChoiceList.php
index c33dda70ca6d..e2ed7a685bc7 100644
--- a/src/Symfony/Component/Form/ChoiceList/ArrayChoiceList.php
+++ b/src/Symfony/Component/Form/ChoiceList/ArrayChoiceList.php
@@ -78,7 +78,7 @@ public function __construct($choices, callable $value = null)
             // If a deterministic value generator was passed, use it later
             $this->valueCallback = $value;
         } else {
-            // Otherwise simply generate incrementing integers as values
+            // Otherwise generate incrementing integers as values
             $i = 0;
             $value = function () use (&$i) {
                 return $i++;
diff --git a/src/Symfony/Component/Form/ChoiceList/LazyChoiceList.php b/src/Symfony/Component/Form/ChoiceList/LazyChoiceList.php
index b81ad48b9189..0fb32734d531 100644
--- a/src/Symfony/Component/Form/ChoiceList/LazyChoiceList.php
+++ b/src/Symfony/Component/Form/ChoiceList/LazyChoiceList.php
@@ -32,7 +32,7 @@ class LazyChoiceList implements ChoiceListInterface
     /**
      * The callable creating string values for each choice.
      *
-     * If null, choices are simply cast to strings.
+     * If null, choices are cast to strings.
      *
      * @var callable|null
      */
diff --git a/src/Symfony/Component/Form/Form.php b/src/Symfony/Component/Form/Form.php
index 1822cf6e18ac..6fc862174ebd 100644
--- a/src/Symfony/Component/Form/Form.php
+++ b/src/Symfony/Component/Form/Form.php
@@ -42,9 +42,9 @@
  *
  * In most cases, format (1) and format (2) will be the same. For example,
  * a checkbox field uses a Boolean value for both internal processing and
- * storage in the object. In these cases you simply need to set a view
- * transformer to convert between formats (2) and (3). You can do this by
- * calling addViewTransformer().
+ * storage in the object. In these cases you need to set a view transformer
+ * to convert between formats (2) and (3). You can do this by calling
+ * addViewTransformer().
  *
  * In some cases though it makes sense to make format (1) configurable. To
  * demonstrate this, let's extend our above date field to store the value
diff --git a/src/Symfony/Component/Form/FormRenderer.php b/src/Symfony/Component/Form/FormRenderer.php
index 16f0a65ac114..8b15e0344d0c 100644
--- a/src/Symfony/Component/Form/FormRenderer.php
+++ b/src/Symfony/Component/Form/FormRenderer.php
@@ -163,7 +163,7 @@ public function searchAndRenderBlock(FormView $view, $blockNameSuffix, array $va
         // "form_widget" in this example (again, no matter in which theme).
         // If the designer wants to explicitly fallback to "form_widget" in their
         // custom "choice_widget", for example because they only want to wrap
-        // a <div> around the original implementation, they can simply call the
+        // a <div> around the original implementation, they can call the
         // widget() function again to render the block for the parent type.
         //
         // The second kind is implemented in the following blocks.
diff --git a/src/Symfony/Component/HttpKernel/Fragment/InlineFragmentRenderer.php b/src/Symfony/Component/HttpKernel/Fragment/InlineFragmentRenderer.php
index 73defb9d3ef7..ce88bd45dea2 100644
--- a/src/Symfony/Component/HttpKernel/Fragment/InlineFragmentRenderer.php
+++ b/src/Symfony/Component/HttpKernel/Fragment/InlineFragmentRenderer.php
@@ -80,7 +80,7 @@ public function render($uri, Request $request, array $options = [])
             return SubRequestHandler::handle($this->kernel, $subRequest, HttpKernelInterface::SUB_REQUEST, false);
         } catch (\Exception $e) {
             // we dispatch the exception event to trigger the logging
-            // the response that comes back is simply ignored
+            // the response that comes back is ignored
             if (isset($options['ignore_errors']) && $options['ignore_errors'] && $this->dispatcher) {
                 $event = new GetResponseForExceptionEvent($this->kernel, $request, HttpKernelInterface::SUB_REQUEST, $e);
 
diff --git a/src/Symfony/Component/Intl/Data/Generator/LocaleDataGenerator.php b/src/Symfony/Component/Intl/Data/Generator/LocaleDataGenerator.php
index 5e0c0a6a1ba6..11b1b6b6d82d 100644
--- a/src/Symfony/Component/Intl/Data/Generator/LocaleDataGenerator.php
+++ b/src/Symfony/Component/Intl/Data/Generator/LocaleDataGenerator.php
@@ -157,7 +157,7 @@ private function generateLocaleName($locale, $displayLocale)
         // the name sorting
         // $name = $this->langBundle->getLanguageName($displayLocale, $lang, $region);
 
-        // Some languages are simply not translated
+        // Some languages are not translated
         // Example: "az" (Azerbaijani) has no translation in "af" (Afrikaans)
         if (null === ($name = $this->languageDataProvider->getName($lang, $displayLocale))) {
             return;
diff --git a/src/Symfony/Component/Validator/Constraints/Regex.php b/src/Symfony/Component/Validator/Constraints/Regex.php
index a71e4de2590e..dc9e5ea8859d 100644
--- a/src/Symfony/Component/Validator/Constraints/Regex.php
+++ b/src/Symfony/Component/Validator/Constraints/Regex.php
@@ -79,7 +79,7 @@ public function getHtmlPattern()
         // Unescape the delimiter
         $pattern = str_replace('\\'.$delimiter, $delimiter, substr($this->pattern, 1, -1));
 
-        // If the pattern is inverted, we can simply wrap it in
+        // If the pattern is inverted, we can wrap it in
         // ((?!pattern).)*
         if (!$this->match) {
             return '((?!'.$pattern.').)*';
diff --git a/src/Symfony/Component/Validator/Mapping/ClassMetadataInterface.php b/src/Symfony/Component/Validator/Mapping/ClassMetadataInterface.php
index e48e241ab8d5..1b6f07ac8eed 100644
--- a/src/Symfony/Component/Validator/Mapping/ClassMetadataInterface.php
+++ b/src/Symfony/Component/Validator/Mapping/ClassMetadataInterface.php
@@ -86,8 +86,8 @@ public function hasPropertyMetadata($property);
     /**
      * Returns all metadata instances for the given named property.
      *
-     * If your implementation does not support properties, simply throw an
-     * exception in this method (for example a <tt>BadMethodCallException</tt>).
+     * If your implementation does not support properties, throw an exception
+     * in this method (for example a <tt>BadMethodCallException</tt>).
      *
      * @param string $property The property name
      *
diff --git a/src/Symfony/Component/Workflow/Tests/Validator/StateMachineValidatorTest.php b/src/Symfony/Component/Workflow/Tests/Validator/StateMachineValidatorTest.php
index c43292899b89..4e344560557d 100644
--- a/src/Symfony/Component/Workflow/Tests/Validator/StateMachineValidatorTest.php
+++ b/src/Symfony/Component/Workflow/Tests/Validator/StateMachineValidatorTest.php
@@ -94,7 +94,7 @@ public function testValid()
 
         (new StateMachineValidator())->validate($definition, 'foo');
 
-        // the test simply ensures that the validation does not fail (i.e. it does not throw any exceptions)
+        // the test ensures that the validation does not fail (i.e. it does not throw any exceptions)
         $this->addToAssertionCount(1);
 
         // The graph looks like:
diff --git a/src/Symfony/Component/Workflow/Tests/Validator/WorkflowValidatorTest.php b/src/Symfony/Component/Workflow/Tests/Validator/WorkflowValidatorTest.php
index cdf10ecdaba9..4a5c5a57dd85 100644
--- a/src/Symfony/Component/Workflow/Tests/Validator/WorkflowValidatorTest.php
+++ b/src/Symfony/Component/Workflow/Tests/Validator/WorkflowValidatorTest.php
@@ -29,7 +29,7 @@ public function testSinglePlaceWorkflowValidatorAndSimpleWorkflow()
 
         (new WorkflowValidator(true))->validate($definition, 'foo');
 
-        // the test simply ensures that the validation does not fail (i.e. it does not throw any exceptions)
+        // the test ensures that the validation does not fail (i.e. it does not throw any exceptions)
         $this->addToAssertionCount(1);
     }
 
@@ -64,7 +64,7 @@ public function testSameTransitionNameButNotSamePlace()
 
         (new WorkflowValidator())->validate($definition, 'foo');
 
-        // the test simply ensures that the validation does not fail (i.e. it does not throw any exceptions)
+        // the test ensures that the validation does not fail (i.e. it does not throw any exceptions)
         $this->addToAssertionCount(1);
     }
 }