One understands time when there is no time.

[I]n a fundamental description of nature we must "forget time"... this can be done in the classical and in the quantum theory.

As we shall see, the concept of time has no meaning before the beginning of the universe.

The quantum world is objective but objectless.

A world without time would be a world without God, a world existing in and by itself, without renewal, without a Creator.

The alternative physics is a physics of light. Light is composed of photons, which have no antiparticle. This means that there is no dualism in the world of light. The conventions of relativity say that time slows down as one approaches the speed of light, but if one tries to imagine the point of view of a thing made of light, one must realize that what is never mentioned is that if one moves at the speed of light, there is no time whatsoever. There is an experience of time zero. … The only experience of time that one can have is of a subjective time that is created by one's own mental processes, but in relationship to the Newtonian universe, there is no time whatsoever. One exists in eternity, one has become eternal, the universe is aging at a staggering rate all around one in this situation, but that is perceived as a fact of this universe—the way we perceive Newtonian physics as a fact of this universe. One has transited into the eternal mode. One is then apart from the moving image; one exists in the completion of eternity.

Neither space nor time has any existence outside the system of evolving relationships that comprises the universe. Physicists refer to this feature of general relativity as background independence.

Both in thought and in feeling, even though time be real, to realise the unimportance of time is the gate of wisdom.

The world had absorbed the dizzying lessons of modern science easily enough, hadn’t it? Reality was a trick of cognition, an illusion woven by the brain. Beneath the apparently solid skin of the world lay a fizzing unreality of quantum mechanics, playing out on a warped and surreal Salvador Dali landscape. Ghost worlds peeled away from the present with every decision. The universe itself would one day simmer down to absolute entropic stasis, the absolute and literal end of time itself. No action, no memory of an action, no trace of a memory, could endure for ever. Every human deed, from the smallest kindness to the grandest artistic achievement, was ultimately pointless.
But it wasn’t as if people went around thinking about that when they had lovers to meet, menus to choose from, birthdays to remember. The humdrum concerns of normal life trumped the miraculous every time.…And the knowledge that humanity was not alone in the universe would be as relevant to most as the knowledge that protons were built of quarks.

Combine general relativity and quantum theory into a single theory that can claim to be the complete theory of nature. This is called the problem of quantum gravity.

In eternity there is no time, only an instant long enough for a joke.

Always is no Time at all.

The quantum world is not made up of objects.

The instant does not have time; and time is made from the movement of the instant.