过去总是在我们的生活中存在，塑造我们是谁以及我们如何看待世界。

The key to performance is elegance, not battalions of special cases.

释义：天下万物的存在与否，不是人的思考、忧虑所能使其产生或消失的。

These walls are very interesting. When you first went to jail, you hated the high walls, and slowly, you get used to it. This is called institutionalization.

The use of a program to prove the 4-color theorem will not change mathematics - it merely demonstrates that the theorem, a challenge for a century, is probably not important to mathematics.