数学的本质在于它的自由。
爱是非理性的。你越爱一个人，就越觉得一切都没有意义。
To the artist there is never anything ugly in nature.
Uncertainty is not the absence of information, but the presence of too much conflicting information.
不确定性不是信息的缺失，而是过多矛盾信息的存在。