Psychological concepts must prove their worth in action.
心理学概念必须在行动中证明其价值。
If you borrow something， try to return it in better shape than you received it. Clean it， sharpen it， fill it up.
人独自行过生命，蒙受玷污，承担罪过，痛饮苦酒，寻觅出路。
"What good's an opinion if you don't know?"
There is no reason why good cannot triumph as often as evil. The triumph of anything is a matter of organization.