 <p>A professor went to a Zen Master and asked him to explain the meaning of Zen.  </p> <p>The Master quietly poured a cup of tea. The cup was full but he continued to  pour as the tea splashed out and ran across the table.</p> <p>The professor watched, mystified. &quot;Why do you keep pouring when the cup is  full?&quot; he asked.</p> <p>&quot;Like this cup, your head is already brimming with thoughts,&quot; said the  Master, &quot;To understand Zen you must first empty your mind of preconceptions.&quot;</p><span style="font-weight: bold;">{mos_fb_discuss:28}</span><p>&nbsp;</p><br />