<i>It matters <b>not</b> how a man dies, but how he lives.</i><br/><br/>Can I change the above sentence in the following way?<br/><br/><i>It <b>doesn't </b>matter how a man dies, but how he lives.</i><br/><br/>One more case:<br/><br/><i>I relax myself <b>not</b> by playing piano, but by watching movies.</i><br/>Can I change the above sentence in the following way? <br/><br/><i>I <b>don't </b>relax myself by playing piano, but by watching movies.</i><br/><br/>Thank you for your answer!