If a cluttered desk is a sign of a cluttered mind, of what,... - Albert Einstein

"What is right is not always popular and what is popular is not always right."

"Everything must be made as simple as possible. But not simpler."

"Curiosity is more important than knowledge."

"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe."

"We know from daily life that we exist for other people first of all, for whose smiles and well-being our own happiness depends."