The question isn't who is going to let me; it's who is going to stop me.
数学的美在于它让我们无需离开椅子就能探索宇宙。
Do not feel envious of the happiness of those who live in a fool’s paradise, for only a fool will think that it is happiness.
我不完美,我也不假装完美。
Contentment is natural wealth,luxury is artificial poverty.