- Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning.
- The true sign of intelligence is not knowledge but imagination.
- We cannot solve our problems with the same thinking we used when we created them.
- The only source of knowledge is experience.
- Weakness of attitude becomes weakness of character.
- You have to learn the rule of the game. And then you have to play better than anyone else.
- Look deep into nature, and then you will understand everything better.
- Logic will get you from A to B. Imagination will take you everywhere.
- The world is a dangerous place to live; not because of the people who are evil, but because of the people who don’t do anything about it.
- Try not to become a man of success, but rather try to become a man of value.
- A person who never made a mistake never tried anything new.
- Most people say that it is the intellect which makes a great scientist. They are wrong: it is character.
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