Branches Quote by Andrei Sakharov

The idea of combining the physics of modern particle theory with cosmology was very young when I started working on cosmology.

— Alan Guth

“The Five Great Problems in Theoretical Physics: Problem 1: Combine general relativity and quantum theory into a single theory that can claim to be…

— Lee Smolin

We're going to need a definitive quantum theory of gravity, which is part of a grand unified theory - it's the main missing piece.

— Kip Thorne

My work on black holes was on the connection between black holes and elementary particles.

— Ashoke Sen

My main interest is the problem of the singularity. If we can't understand what happened at the singularity we came out of, then we…

— Neil Turok

I would like to mention astrophysics; in this field, the strange properties of the pulsars and quasars, and perhaps also the gravitational waves, can…

— Werner Heisenberg

“Now, at the outset of the twenty-first century, we stand on the verge of a new revolution. The search for a deeper theory than…

— Marcus Chown

“Over the last three decades, theorists have proposed at least a dozen new approaches. Each approach is motivated by a compelling hypothesis, but none…

— Lee Smolin

“The author's effort in his mission to edify the esoteric & abstruse topics with regard to universe and matter is utterly commendable.All the clarifications…

— Devinder Kumar Dhiman

“Problem 1: Combine general relativity and quantum theory into a single theory that can claim to be the complete theory of nature. This is…

— Lee Smolin

My main professional interest during the 1970s has been in the dramatic change of concepts and ideas that has occurred in physics during the…

— Fritjof Capra

I work in string theory. This is a branch of physics which assumes that the elementary objects in the universe are not particles but…

— Ashoke Sen