自守形式的研究证明了对称性在数学中的力量。

墙壁定义了空间，但开口将其与世界连接。

“礼治”是荀子的重要思想，荀子认为“礼”之起源，是为了保持物质和人欲的平衡。欲望，是人生来就有的，满足欲望是人的本性。但是人人都依自己的愿望行事的话，可想而知世界就会混乱不堪，而且外物有限，不能想要多少就要多少。所以需要制定“礼”来规范人们的行为，合理引导欲望。荀子认为“礼者，养也”，“礼”并非是刻意压制人的欲望，而是合理满足人的欲望，以及合理分配物质，使社会相对稳定。

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

The truth is not always beautiful, nor beautiful words the truth.

I think it's important to have a good hard failure when you're young... I learned a lot from that. Because it makes you kind of aware of what can happen to you. Because of it, I've never had any fear in my whole life when we've been near collapse and so on. I've never been afraid.