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.
In the long run, we get no more than we have been willing to risk giving.
When you go to buy, use your eyes, not your ears.
A preoccupation with the future not only prevents us from seeing the present as it is but often prompts us to rearrange the past.
If anything is certain, it is that change is certain. The world we are planning for today will not exist in this form tomorrow.