Habit is second nature.

The value of life lies not in the length of days, but in the use we make of them... Whether you find satisfaction in life depends not on your tale of years, but on your will.

Have you known how to take rest? You have done more than he who hath taken empires and cities.

One may disavow and disclaim vices that surprise us and whereto our passions transport us. But those which by long habit are rooted in a strong and anchored in a powerful will are not subject to contradiction. Repentance is but a denying of our will, and an opposition of our fantasies, which diverts us here and there.

On the highest throne in the world, we still sit only on our own bottom.

It is far more probable that our senses should deceive us, than that an old woman should be carried up a chimney on a broom stick; and that it is far less astonishing that witnesses should lie, than that witches should perform the acts that were alleged.

There is a certain consideration, and a general duty of humanity, that binds us not only to the animals, which have life and feeling, but even to the trees and plants. We owe justice to people, and kindness and benevolence to all other creatures who may be susceptible of it. There is some intercourse between them and us, and some mutual obligation.