学习数学的最好方法就是去做数学。
The best way to learn mathematics is to do mathematics.
You must be the change you wish to see in the world.
能够容忍你无知的人，可称之为真正的朋友。
I never guess. It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.
我不害怕与众不同。
The desires， and other passions of man， in themselves， are in his own power； his real difficulties are， to know when they are to be controlled， and when not.
It's all about trying to be a little less ignorant and a little less selfish every day.