唯一能显著影响行为的学习是自我发现、自我吸收的学习。
The only learning which significantly influences behavior is self-discovered, self-appropriated learning.
You cannot swim for new horizons until you have courage to lose sight of the shore.
人们并不懒惰。他们只是有无力的目标——也就是说，目标没有激励他们。
相机是个骗子。
The essence of mathematics lies in its freedom.