"Life is what happens when you're busy making other plans."
Man is the only creature who refuses to be what he is.
世界是一本伟大的书，那些从未离开家的人只读了一页。
A person may cause evil to others not only by his actions but by his inaction， and in either case， he is justly accountable to them for the injury.
数学的本质在于其自由性。
The past is a shadow that clings to our heels.
我们关注的不是数字，而是产生数字的那些东西。