“Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning.”

“Life is like riding a bicycle. To keep your balance, you must keep moving.”

“Look deep into nature, and then you will understand everything better.”

“Strive not to be a success, but rather to be of value.”

“A person who never made a mistake never tried anything new.”

“Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.”

“You can't blame gravity for falling in love.”

“It's not that I'm so smart, it's just that I stay with problems longer.”

“Logic will get you from A to B. Imagination will take you everywhere.”

“We can't solve problems by using the same kind of thinking we used when we created them.”

“The only source of knowledge is experience.”

“No amount of experimentation can ever prove me right; a single experiment can prove me wrong.”

“The only reason for time is so that everything doesn't happen at once.”

“Common sense is the collection of prejudices acquired by age eighteen.”

“I live in that solitude which is painful in youth, but delicious in the years of maturity.”

“Nationalism is an infantile disease. It is the measles of mankind.”

“Whoever is careless with the truth in small matters cannot be trusted with important matters.”

“Great spirits have always encountered violent opposition from mediocre minds.”

“The true sign of intelligence is not knowledge but imagination.”

“If you are out to describe the truth, leave elegance to the tailor.”