抽象的力量使数学能够超越物理现实的限制。
The power of abstraction is what allows mathematics to transcend the limits of physical reality.
事实是每个人都相信的简单陈述。它是无辜的,除非被证明有罪。假设是没有人愿意相信的新颖建议。它是有罪的,直到被证明有效。
The surest way to corrupt a youth is to instruct him to hold in higher esteem those who think alike than those who think differently.