There is one qualitative aspect of reality that sticks out from all others in both profundity and mystery. It is the consistent success of mathematics as a description of the workings of reality and the ability of the human mind to discover and invent mathematical truths.

The traditional view that initial conditions are for the theologians and evolution equations for the physicists seems to have been overthrown―at least temporarily.

The study of the Wave Function of the Universe is in its infancy. It will undoubtedly change in many ways before it is done.

What we really want is some principle that tells us why the organization of the Universe changes in the way that it does: why it now expands so uniformly and isotropically.

The question of why the Universe is as it is, is inextricably linked to that of why fundamental physics is the way that it is.

(E)lementary particles come in populations of universally identical particles.

The symbols are 0, ‘zero’, S, ‘successor of’, +, ×, and =.

Most fundamental pictures of the physical world assume that the basic notions – fields, space, and time – are continuous entities rather than discrete bits.

The nature of time is one of those baffling problems that physicists have debated for centuries, but have made depressingly meagre progress in unravelling.