We should venture on the study of every kind of animal without distaste; for each and all will reveal to us something natural and something beautiful.

Rhetoric may be defined as the faculty of observing in any given case the available means of persuasion.

Nature creates nothing without a purpose.

The society that loses its grip on the past is in danger, for it produces men who know nothing but the present, and who are not aware that life had been, and could be, different from what it is.

The state or political community, which is the highest of all, and which embraces all the rest, aims at good in a greater degree than any other, and at the highest good.

The life of theoretical philosophy is the best and happiest a man can lead. Few men are capable of it and then only intermittently. For the rest there is a second-best way of life, that of moral virtue and practical wisdom.

Evidence from torture may be considered completely untrustworthy