The ultimate end...is not knowledge, but action. To be half right on time may be more important than to obtain the whole truth too late.

Some men turn every quality or art into a means of making money; this they conceive to be the end, and to the promotion of the end all things must contribute.

Those that deem politics beneath their dignity are doomed to be governed by those of lesser talents.

He is courageous who endures and fears the right thing, for the right motive, in the right way and at the right times.

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.

Temperance is a mean with regard to pleasures.

Happiness does not consist in amusement. In fact, it would be strange if our end were amusement, and if we were to labor and suffer hardships all our life long merely to amuse ourselves.... The happy life is regarded as a life in conformity with virtue. It is a life which involves effort and is not spent in amusement.