“A wise person is one who sees the effect of an action before he acts.”

“The superior man acts before he speaks, and afterwards speaks according to his action.”

“I am like a person who has placed poison in one of two glasses before a person he loves—and looks back upon his act with horror and incredulity—but still does not know from which glass the person will drink.”

“An optimist is a person who sees a green light everywhere, while the pessimist sees only the red spotlight... The truly wise person is colour-blind.”

“The best cure for one's bad tendencies is to see them in action in another person.”

“While it is true that most people never see or understand the difference they make, or sometimes only imagine their actions having a tiny effect, every single action a person takes has far-reaching consequences.”

“People who count their chickens before they are hatched act very wisely because chickens run about so absurdly that it's impossible to count them accurately.”

“To be integrated in one another, each person should annul himself before the others. This is done by each seeing the friends' merits and not their faults. But one who thinks that he is a little higher than the friends can no longer unite with them.”

“What she needed was just one person, one wise and sympathetic grown-up who could help her.”

“The action outcome, x, may then be said to be dependent upon a combination of effective personal force and effective environmental force, thus:
x = f (ff person, ff environment).
One is tempted to formulate the underlying relation between the two independent variables as an additive one, for if the effective environmental force is zero (which would mean that the combination of environmental factors neither hinders nor furthers the result at), then x will depend only on the effective personal force.”