Obstinate people can be divided into the opinionated, the ignorant, and the boorish.

Every art and every inquiry, and similarly every action and choice, is thought to aim at some good; and for this reason the good has rightly been declared to be that at which all things aim.

The misanthrope, as an essentially solitary man, is not a man at all: he must be a beast or a god.

All food must be capable of being digested, and that what produces digestion is warmth; that is why everything that has soul in it possesses warmth.

Female cats are very Lascivious, and make advances to the male.

The shape of the heaven is of necessity spherical; for that is the shape most appropriate to its substance and also by nature primary.

All flatterers are mercenary, and all low-minded men are flatterers.