“The important thing is not to stop questioning. Curiosity has its own reason for existing.”

“The important thing is never to stop questioning.”

“Curiosity is more important than knowledge.”

“The most important question a person can ask is, "Is the Universe a friendly place?”

“Never lose a holy curiosity.”

“It is a miracle that curiosity survives formal education.”

“The most important human endeavor is the striving for morality in our actions. Our inner balance and even our very existence depend on it. Only morality in our actions can give beauty and dignity to life.”