"Most sets of values would give rise to universes that, although they might be very beautiful, would contain no one able to wonder at that beauty."

"It is no good getting furious if you get stuck. What I do is keep thinking about the problem but work on something else. Sometimes it is years before I see the way forward. In the case of information loss and black holes, it was 29 years."

"To walk the path of enlightenment means the river of time shapes the stones of destiny."

"It is a profound truth that serenity begins the moment you cease demanding that the external world conform — an essential principle for the reflective life."

"The grand aim of all science is to cover the greatest number of empirical facts by logical deduction from the smallest number of hypotheses or axioms."

"The whole of science is nothing more than a refinement of everyday thinking."

"It's time to let science and medicine, not politics and rhetoric, lead us to good, sound policy."

"We must conceive of this whole universe as one commonwealth of which both gods and men are members."