Men of genius do not excel in any profession because they labor in it, but they labor in it because they excel.
Sometimes when you innovate, you make mistakes. It is best to admit them quickly, and get on with improving your other innovations.
Books...are like lobster shells, we surround ourselves with 'em, then we grow out of 'em and leave 'em behind, as evidence of our earlier stages of development.
In our civilization, and under our republican form of government, intelligence is so highly honored that it is rewarded by exemption from the cares of office.
There is an alchemy in sorrow. It can be transmuted into wisdom, which, if it does not bring joy, can yet bring happiness.
Good judgment comes from experience, and experience comes from bad judgment.
Nothing great in the world has been accomplished without passion.