I don't believe in pessimism. If something doesn't come up the way you want, forge ahead. If you think it's going to rain, it will.
In the realm of perception, the whole is not only more than but also very different from the sum of its parts.
I don't care about the past, I care about the future.
数学的美在于它能够将复杂的思想简化为优雅的结构。
习惯的强度是其被强化次数的函数。