Freedom is independence of the compulsory will of another, and in so far as it tends to exist with the freedom of all according to a universal law, it is the one sole original inborn right belonging to every man in virtue of his humanity.

Sincerity is the indispensable ground of all conscientiousness, and by consequence of all heartfelt religion.

Three things tell a man: his eyes, his friends and his favorite quotes

Morality is not properly the doctrine of how we may make ourselves happy, but how we may make ourselves worthy of happiness.

One is not rich by what one owns, but more by what one is able to do without with dignity.

Reason must approach nature with the view, indeed, of receiving information from it, not, however, in the character of a pupil, who listens to all that his master chooses to tell him, but in that of a judge, who compels the witnesses to reply to those questions which he himself thinks fit to propose. To this single idea must the revolution be ascribed, by which, after groping in the dark for so many centuries, natural science was at length conducted into the path of certain progress.

It is therefore correct to say that the senses do not err — not because they always judge rightly, but because they do not judge at all.