成人必须给幼儿提供活动的空间。
对心灵的研究就是对生活问题解决的研究。
翻译:指出世间万物皆有可能被人类利用,但工艺的精巧和细微之处仍需不断追求。
Growth is painful, but nothing is as painful as staying stuck.
幽默是应对生活荒谬的一种方式。
工会对工资和就业的影响常常被误解。
Man is not logical and his intellectual history is a record of mental reserves and compromises. He hangs on to what he can in his old beliefs even when he is compelled to surrender their logical basis.