Martin Heidegger Quotes

Imaginary time is a new dimension, at right angles to ordinary, real time.

Time is not a line but a dimension, like the dimensions of space.

My ideas about time all developed from the realization that if nothing were to change we could not say that time passes. Change is primary, time, if it exists at all, is something we deduce from it.

Physics is often stranger than science fiction, and I think science fiction takes its cues from physics: higher dimensions, wormholes, the warping of space and time, stuff like that.

Time is still the great mystery to us. It is no more than a concept; we don't know if it even exists.

Before 1915, space and time were thought of as a fixed arena in which events took place, but which was not affected by what happened in it. Space and time are now dynamic quantities... space and time not only affect but are also affected by everything that happens in the universe.

Time-space as commonly understood, in the sense of the distance measured between two time-points, is the result of time calculation.

Apparently, some physicists argue that time is curved. I suppose this means that the past is in some way still present.

Even in empty space, time and space still exist.

Is time our invention, or is time a real thing... I realize we're measuring it, but in the cosmic scheme of things, is there really time?

Time is not a line but a dimension, like the dimensions of space. If you can bend space you can bend time also, and if you knew enough and could move faster than light you could travel backwards in time and exist in two places at once.

We have to have a combination of general relativity that describes the warping of space and time, and quantum physics, which describes the uncertainties in that warping and how they change.

Black holes provide theoreticians with an important theoretical laboratory to test ideas. Conditions within a black hole are so extreme, that by analyzing aspects of black holes we see space and time in an exotic environment, one that has shed important, and sometimes perplexing, new light on their fundamental nature.

I always think of space-time as being the real substance of space, and the galaxies and the stars just like the foam on the ocean.

It now appears that the way the universe began can indeed be determined, using imaginary time.

Do you realize that if you fall into a black hole, you will see the entire future of the Universe unfold in front of you in a matter of moments and you will emerge into another space-time created by the singularity of the black hole you just fell into?

Einstein's gravitational theory, which is said to be the greatest single achievement of theoretical physics, resulted in beautiful relations connecting gravitational phenomena with the geometry of space; this was an exciting idea.

Conventionally, one looks at history as something of the past. But after Einstein, who knows what is in the past and what is in the present?

What we observe as material bodies and forces are nothing but shapes and variations in the structure of space.

Time is an illusion. Time only exists when we think about the past and the future. Time doesn't exist in the present here and now.

The melded nature of space and time is intimately woven with properties of light speed. The inviolable nature of the speed of light is actually, in Einstein's hands, talking about the inviolable nature of cause and effect.

In the future, maybe quantum mechanics will teach us something equally chilling about exactly how we exist from moment to moment of what we like to think of as time.

In spacetime, all events are baked together: a four-dimensional continuum. Past and future are no more privileged than left and right or up and down.

Space and time may have a structure as intricate as the fauna of a rich ecosystem, but on a scale far larger than the horizon of our observations.

I'm trying to understand how time works. And that's a huge question that has lots of different aspects to it.