一个国家的价值,从长远来看,就是它所组成的个体的价值。
The worth of a state, in the long run, is the worth of the individuals composing it.
"Psychology must focus on the utility of mental operations."
进步的真正衡量标准不在于知识的积累,而在于其应用于人类的改善。
Choose a life of action,not one of ostentation.
The study of mathematics is like air or water to the development of science.