孩子需要玩耍的自由和时间。玩耍不是奢侈品，而是必需品。
The ideal of behaviorism is to eliminate coercion: to apply controls by changing the environment in such a way as to reinforce the kind of behavior that benefits everyone.
The only way to be truly contemporary is to be untimely.
If you're not failing, you're not pushing your limits, and if you're not pushing your limits, you're not maximizing your potential.