If the aim of physical theories is to explain experimental…

Now these two questions Does there exist a material reality distinct from sensible appearances? and What is the nature of reality? do not have…

— Pierre Duhem

What chemists took from Dalton was not new experimental laws but a new way of practicing chemistry (he himself called it the 'new system…

— Thomas Kuhn

“All the best physical theories are associated with equations which allow the continuation of data defined at present into the future, and hence allow…

— John D. Barrow

Until now, physical theories have been regarded as merely models with approximately describe the reality of nature. As the models improve, so the fit…

— Paul Davies

“The value of a physical theory depends upon its usefulness. In this sense the history of physical theories might be said to resemble the…

— Gary Zukav

If moral statements are about something, then the universe is not quite as science suggests it is, since physical theories, having said nothing about…

— David Berlinski

I now want to tell three stories about advances in twentieth-century physics. A curious fact emerges in these tales: time and again physicists have…

— Steven Weinberg

Today's preoccupation with physical theories of everything takes a wrong turn from the purpose of science - to question all things relentlessly. Modern physics…

— Robert Lanza

The progress of science is much more muddled than is depicted in most history books. This is especially true of theoretical physics, partly because…

— David Gross

What I remember most clearly was that when I put down a suggestion that seemed to me cogent and reasonable, Einstein did not in…

— Hermann Bondi

“If you are disabled, it is probably not your fault, but it is no good blaming the world or expecting it to take pity…

— Stephen Hawking

Alchemy and Kabbalah are later developments in my thinking. I think the primary interest has been the relationship of magic and mystery to logic…

— Fred Alan Wolf

Since the founding of quantum mechanics in the 1920s, theoretical physics had nurtured an extremely radical tradition.

— David Gross

“When you ask what are electrons and protons I ought to answer that this question is not a profitable one to ask and does…

— Paul A.M. Dirac

The pace of science forces the pace of technique. Theoretical physics forces atomic energy on us; the successful production of the fission bomb forces…

— Erich Fromm