Cicero: “But if anyone kills a tyrant--be he never so intimate a friend--he has not laden his soul with guilt, has he?”

But for the most part, people are led to wrong-doing in order to secure some personal end; in this vice, avarice is generally the controlling motive.

And so, when we have leisure from the demands of business cares, we are eager to see, to hear, to learn something new, and we esteem a desire to know the secrets or wonders of creation as indispensable to a happy life.

But while they steer clear of the one kind of injustice, they fall into the other: they are traitors to social life, for they contribute to it none of their interest, none of their effort, none of their means.

In the matter of a promise one must always consider the meaning and not the mere words.