As to the gods, I do not know whether they exist or not, nor what they are like in form; for there are many things that hinder sure knowledge, the obscurity of the matter and the shortness of human life.
化学是物质的科学,但我更愿意将其视为变化的科学。
热爱你过的生活,过你热爱的生活。
No man really knows about other human beings. The best he can do is to suppose that they are like himself.