Once we accept our limits, we go beyond them.
To raise new questions, new possibilities, to regard old problems from a new angle, requires creative imagination and marks real advance in science.
Gravitation is not responsible for people falling in love.
We cannot solve our problems with the same thinking we used when we created them.
Weakness of attitude becomes weakness of character.
The true sign of intelligence is not knowledge but imagination.
The most beautiful thing we can experience is the mysterious. It is the source of all true art and science.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning.
Look deep into nature, and then you will understand everything better.
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