With all humility, I think, "Whatsoever thy hand findeth to do, do it with thy might." Infinitely more important than the vain attempt to love one's neighbor as one's self. If you want to hit a bird on the wing you must have all your will in focus, you must not be thinking about yourself, and equally, you must not be thinking about your neighbor; you must be living with your eye on that bird. Every achievement is a bird on the wing.

Reason may be the lever, but sentiment gives you the fulcrum and the place to stand on if you want to move the world.

To have doubted one's own first principles is the mark of a civilized man.

There is something frightful in the way in which not only characteristic qualities, but particular manifestations of them, are repeated from generation to generation.

The ultimate good desired is better reached by free trade in ideas [and] the best test of truth is the power of the thought to get itself accepted in the competition of the market.

I have no respect for the passion of equality, which seems to me merely idealizing envy - I don't disparage envy, but I don't accept it as legitimately my master.

Our test of truth is a reference to either a present or imagined future majority in favour of our view.