It is easy to distinguish between the joking that reflects good breeding and that which is coarse-the one, if aired at an apposite moment of mental relaxation, is becoming in the most serious of men, whereas the other is unworthy of any free person, if the content is indecent or the expression obscene.
Not to know what has been transacted in former times is to be always a child. If no use is made of the labors of past ages, the world must remain always in the infancy of knowledge.
Be sure that it is not you that is mortal, but only your body. For that man whom your outward form reveals is not yourself; the spirit is the true self, not that physical figure which and be pointed out by your finger.