Words are wise men's counters, they do but reckon by them; but they are the money of fools.
The only way to tell the truth is to speak with authority, and the only way to speak with authority is to claim the right to tell the truth.
最好的学习方法就是动手去做——在实验室里亲自动手。
自然状态下的生活是孤独、贫穷、丑陋、野蛮和短暂的。
Nothing is a waste of time if you use the experience wisely.
Improve yourself through reflection.