"The greatest danger for our future is apathy."

"The universe is a grand design, and we are but tiny parts of it."

"When I gave a lecture in Japan, I was asked not to mention the possible re-collapse of the universe, because it might affect the stock market. However, I can reassure anyone who is nervous about their…"

"There is a fundamental difference between religion, which is based on authority, and science, which is based on observation and reason. Science will win because it works."

"I would like to understand the mind of God, if there is one."