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The secret of a happy old age is to have a good memory and a bad one.
Look up at the stars and not down at your feet. Try to make sense of what you see, and wonder about what makes the universe exist. Be curious.
The best fertilizer is the farmer's shadow in the field.
Trust doesn’t mean that you trust that someone won’t screw up—it means you trust them even when they do screw up.
Mistakes can be corrected by those who pay attention to facts but dogmatism will not be corrected by those who are wedded to a vision.