天下不怕没有能臣，怕的是没有君主去使用他们；天下不怕没有财货，怕的是无人去管理它们。
Man's freedom is his limitation.
Architecture should be quiet, not shouting.
The only way to change behavior is through manipulation of reinforcement contingencies.
Talkers are usually more articulate than doers, since talk is their specialty.