You can't blame gravity for falling in love.
Look deep into nature, and then you will understand everything better.
Insanity: doing the same thing over and over again and expecting different results.
Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning.
Try not to become a man of success, but rather try to become a man of value.
Life is like riding a bicycle. To keep your balance, you must keep moving.
The true sign of intelligence is not knowledge but imagination.
Once we accept our limits, we go beyond them.
We cannot solve our problems with the same thinking we used when we created them.
Everyone should be respected as an individual, but no one idolized.
Whoever is careless with the truth in small matters cannot be trusted with important matters.
When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity.
The only source of knowledge is experience.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
The difference between stupidity and genius is that genius has its limits.
Weakness of attitude becomes weakness of character.
Education is what remains after one has forgotten what one has learned in school.
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.
A person who never made a mistake never tried anything new.
Logic will get you from A to B. Imagination will take you everywhere.