Experience never misleads; what you are misled by is only your judgment, and this misleads you by anticipating results from experience of a kind that is not produced by your experiments.

Learning is the only thing the mind never exhausts, never fears, and never regrets.

I have from an early age abjured the use of meat, and the time will come when men such as I will look upon the murder of animals as they now look upon the murder of men.

My body will not be a tomb for other creatures.

If you cause your ship to stop and place the head of a long tube in the water and place the outer extremity to your ear, you will hear ships at a great distance from you.

You do ill if you praise, but worse if you censure, what you do not understand.

He who wishes to be rich in a day will be hanged in a year.