The essence of mathematics is not to make simple things complicated, but to make complicated things simple.
到达顶峰的唯 一方法是攀登高山,而不是等待电梯。
Love is not about finding the perfect person, but about seeing the imperfect person perfectly.
The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts.