diff --git a/src/Factory/Psr17Factory.php b/src/Factory/Psr17Factory.php
index 0726b68..f304baa 100644
--- a/src/Factory/Psr17Factory.php
+++ b/src/Factory/Psr17Factory.php
@@ -40,15 +40,15 @@ public function createStreamFromFile(string $filename, string $mode = 'r'): Stre
         try {
             $resource = @\fopen($filename, $mode);
         } catch (\Throwable $e) {
-            throw new \RuntimeException('The file ' . $filename . ' cannot be opened.');
+            throw new \RuntimeException(\sprintf('The file "%s" cannot be opened.', $filename));
         }
 
         if (false === $resource) {
             if ('' === $mode || false === \in_array($mode[0], ['r', 'w', 'a', 'x', 'c'], true)) {
-                throw new \InvalidArgumentException('The mode ' . $mode . ' is invalid.');
+                throw new \InvalidArgumentException(\sprintf('The mode "%s" is invalid.', $mode));
             }
 
-            throw new \RuntimeException('The file ' . $filename . ' cannot be opened.');
+            throw new \RuntimeException(\sprintf('The file "%s" cannot be opened.', $filename));
         }
 
         return Stream::create($resource);
diff --git a/src/Stream.php b/src/Stream.php
index fee0c63..f1dc804 100644
--- a/src/Stream.php
+++ b/src/Stream.php
@@ -210,7 +210,7 @@ public function seek($offset, $whence = \SEEK_SET): void
         }
 
         if (-1 === \fseek($this->stream, $offset, $whence)) {
-            throw new \RuntimeException('Unable to seek to stream position ' . $offset . ' with whence ' . \var_export($whence, true));
+            throw new \RuntimeException('Unable to seek to stream position "' . $offset . '" with whence ' . \var_export($whence, true));
         }
     }
 
diff --git a/src/UploadedFile.php b/src/UploadedFile.php
index 3c0d098..198cd33 100644
--- a/src/UploadedFile.php
+++ b/src/UploadedFile.php
@@ -117,7 +117,7 @@ public function getStream(): StreamInterface
         try {
             return Stream::create(\fopen($this->file, 'r'));
         } catch (\Throwable $e) {
-            throw new \RuntimeException('The file ' . $this->file . ' cannot be opened.');
+            throw new \RuntimeException(\sprintf('The file "%s" cannot be opened.', $this->file));
         }
     }
 
@@ -141,7 +141,7 @@ public function moveTo($targetPath): void
                 // Copy the contents of a stream into another stream until end-of-file.
                 $dest = Stream::create(\fopen($targetPath, 'w'));
             } catch (\Throwable $e) {
-                throw new \RuntimeException('The file ' . $targetPath . ' cannot be opened.');
+                throw new \RuntimeException(\sprintf('The file "%s" cannot be opened.', $targetPath));
             }
 
             while (!$stream->eof()) {
@@ -154,7 +154,7 @@ public function moveTo($targetPath): void
         }
 
         if (false === $this->moved) {
-            throw new \RuntimeException(\sprintf('Uploaded file could not be moved to %s', $targetPath));
+            throw new \RuntimeException(\sprintf('Uploaded file could not be moved to "%s"', $targetPath));
         }
     }
 
diff --git a/src/Uri.php b/src/Uri.php
index eee304f..13fbf72 100644
--- a/src/Uri.php
+++ b/src/Uri.php
@@ -50,7 +50,7 @@ public function __construct(string $uri = '')
     {
         if ('' !== $uri) {
             if (false === $parts = \parse_url($uri)) {
-                throw new \InvalidArgumentException("Unable to parse URI: $uri");
+                throw new \InvalidArgumentException(\sprintf('Unable to parse URI: "%s"', $uri));
             }
 
             // Apply parse_url parts to a URI.
diff --git a/tests/RequestTest.php b/tests/RequestTest.php
index ddac6d2..392b032 100644
--- a/tests/RequestTest.php
+++ b/tests/RequestTest.php
@@ -28,7 +28,7 @@ public function testRequestUriMayBeUri()
     public function testValidateRequestUri()
     {
         $this->expectException(\InvalidArgumentException::class);
-        $this->expectExceptionMessage('Unable to parse URI: ///');
+        $this->expectExceptionMessage('Unable to parse URI: "///"');
 
         new Request('GET', '///');
     }