"Ten years ago, it was common (and correct) to distinguish the two main approaches to by saying that string theory ...…"

"A hundred years ago our view of space and time was dramatically changed by the introduction of special relativity. Te…"

"The wilderness begins at the edge of my body, at the edge of my consciousness, and extends to the edge of the univers…"

"I had always been aware that the Universe is sad; everything in it, animate or inanimate, the wild creatures, the sto…"

"This is not a man who sits down to "write a poem"; rather, some burden of understanding and feeling, some need to kno…"

"We must realize that growth is but an adolescent phase of life that stops when physical maturity is reached. If growt…"

"The greatest shortcoming of the human race is man's inability to understand the exponential function."

"Can you think of any problem in any area of human endeavor on any scale, from microscopic to global, whose long-term …"

"In an enterprise such as the building of the atomic bomb the difference between ideas, hopes, suggestions and theoret…"

"I remember having listened to Fermi’s discussions on hydrodynamics with von Neumann. (These took the strange form of …"