Every man is his own greatest enemy, and as it were his own murderer.
What is necessary to change a person is to change his awareness of himself.
我们都在逃避某些东西,而我们逃避的东西往往是我们最渴望的。
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法的:它是关于理解的。