The essence of mathematics lies in its freedom.
行为主义者对人类行为的兴趣不仅仅是旁观者的兴趣——他想要控制人类的反应,就像物理科学家想要控制和操纵其他自然现象一样。
The question you should be asking isn't, 'What do I want?' or 'What are my goals?' but 'What would excite me?'
Quality is never an accident; it is always the result of intelligent effort.