"Don't trust your teachers."

"Listening to a cultivated person of today who jokes and almost boasts of his scientific ignorance is as sad as listen…"

"Hawking was one of the good physicists of his generation, not the universal genius the popular press has depicted. It…"

"If we want to understand the past we must do so on its own terms, and disregard the future of that past, but if we wa…"

"... theoretical physics is less clean than the way it's usually solved. You can always change parameters and save you…"

"The landscape is magic, the trip is far from being over."

"I think that physics is about escaping the prison of the received thoughts and searching for novel ways of thinking t…"

"The new coherent picture is not yet available. With all their immense empirical success, G(eneral)R(elativity) and Q(…"

"An overly pragmatic attitude is not productive in the long run."

"[I]n general relativistic observations there is no preferred independent time variable. What we measure are a number …"