Our youth and manhood are due to our country, but our declining years are due to ourselves.

No mortal man, moreover is wise at all moments.

Such is the audacity of man, that he hath learned to counterfeit Nature, yea, and is so bold as to challenge her in her work.

The depth of darkness to which you can descend and still live is an exact measure of the height to which you can aspire to reach.

There is alas no law against incompetency; no striking example is made. They learn by our bodily jeopardy and make experiments until the death of the patients, and the doctor is the only person not punished for murder.

Human nature craves novelty.

The graceful tear that streams for others' Man is the weeping animal born to govern all the rest.