潛能

威廉．詹姆斯教授︰「相比於我們應該取得的成就，我們現在還處於半醒狀態，我們只用到了自己全部潛能的一小部分。換句話說，我們按照現在的狀態生活，是在我們最大能力範圍之內的，我們都有各種各樣的力量，卻從來都沒有很好地加以利用。」

William James, one of the most distinguished psychologists and philosophers America has ever produced:

Compared with what we ought to be, we are only half awake. We are making use of only a small part of our physical and mental resources. Stating the thing broadly, the human individual thus lives far within his limits. He possesses powers of various sorts which he habitually fails to use.