The following sentence is the famous saying of Albert Einstein.<br/>In that sentence, exactly what the underlined it represents is not certain.<br/><br/>It seems to represent the universe in one way while it seems to stand for the mystery (of the universe)?<br/><br/>Can you tell me what it is?<br/><br/><i><b>The mystery of the universe is <span style="color:#993300;"><u>it</u></span>s comprehensibility.</b></i>