No one can speak well, unless he thoroughly understands his subject.

Let us not go over the old ground but rather prepare for what is to come.

Laws should be interpreted in a liberal sense so that their intention may be preserved.

The rule of friendship means there should be mutual sympathy between them, each supplying what the other lacks and trying to benefit the other, always using friendly and sincere words.

Friendship is the only thing in the world concerning the usefulness of which all mankind are agreed.

We cannot employ the mind to advantage when we are filled with excessive food and drink.

If our lives are endangered by plots or violence or armed robbers or enemies, any and every method of protecting ourselves is morally right.