Is this a translation of 逍遥游？
It's reallys cited from 《庄子》,but not from the chapter of 《逍遥游》. It's from the chapter of 《秋水》. The orginal words for your citation are:


  是故大知观于远近，故小而不寡，大而不多，知量无穷。
  
  是故大知觀於遠近，故小而不寡，大而不多，知量無窮。