Mathematics is not a spectator sport. You have to do it to understand it.
最大的悲剧不是坏人的残暴,而是好人的沉默。
The only limits you have are the ones you set for yourself.
Porcelain is the most alchemical of materials, turning earth into something that seems to hold light.
The moment we want to believe something, we suddenly see all the arguments for it, and become blind to the arguments against it.