Be ashamed to die until you have won some victory for humanity)
Learn not only to find what you like, learn to like what you find.
Do definite good; first of all to yourself, then to definite persons.
One picture is worth a thousand words.
Nobody speaks the truth when there's something they must have.
The future has several names. For the weak, it is impossible. For the fainthearted, it is unknown. But for the thoughtful and valiant, it is ideal.
Freedom of speech and freedom of action are meaningless without freedom to think. And there is no freedom of thought without doubt.
If I had my life to live over... I'd dare to make more mistakes next time.
Few men have virtue to withstand the highest bidder.
Good ideas are not adopted automatically. They must be driven into practice with courageous patience.