title: How to select strings which don't have special characters or numbers
body: <p>I have thousands of strings out of which I only want to select those which don't have any special characters in them. Special characters include <code>;:~?[]()+-_*^%$#@&gt;&lt;{}\|/</code> and numbers 0-9. So basically valid sentences are the ones which contain letters or letters with commas. </p>
  
  <p>What would be fastest way to do it so that task can be done quickly and efficiently.</p>
  
  <p>Example:</p>
  
  <pre><code>1. She has the air of blank disdainful amusement a cat gets when toying with a mouse 
  2. Origin Expand 1535-1545 1535-45; disdain + -ful Related forms Expand disdainfully, adverb disdainfulness, noun Synonyms Expand contemptuous, haughty, contumelious
  
  3. British Dictionary definitions for disdainful Expand disdainful /dsdenfl/ adjective
  
  4.An example of someone who is disdainful, is a person saying they dislike someone just because of their religion
  </code></pre>
  
  <p>Sentence 1 and 4 should be selected</p>
  
  <p>So I need something along the lines of</p>
  
  <pre><code>if( $s does not have number an does not have special character)
  {
  //Save it
  }
  </code></pre>
  
  <p>Any help would be appreciated
  Ahmar</p>