If you close your mind in judgements and traffic with desires, your heart will be troubled. If you keep your mind from judging and aren't led by the senses, your heart will find peace.
LaoziThe Wise Man is square but not sharp, honest but not not malign, straight but not severe, bright but not dazzling.
LaoziYou cannot know the body by studying the finger, and you cannot understand the universe by learning one science.
Laozi