There was no "before" the beginning of our universe, because once upon a time there was no time.

Once upon a time when there was no time.

There is no reason that the universe should be designed for our convenience.

What cannot be known is more revealing than what can.

Some things are as they are regardless of what they were.

We are just strings of quarks living in a suburb of the local density maximum of the universe.

We can predict the present without having to know everything about the past.

If all the stars and galaxies in the universe today were smoothed out into a uniform sea of atoms, there would only be about one atom in every cubic meter of space.

There are only certain intervals of time when life of any sort is possible in an expanding universe and we can practise astronomy only during that habitable time interval in cosmic history.

When we try to observe things that are very small, the act of observation itself will significantly disturb the state we are seeking to measure.

We can never know the origins of the universe. The deepest secrets are the ones that keep themselves.

A man does not need encouragement to lose his heart.

It was his eyes, so challenging and with a piercing look about them. They were eyes that trusted in nothing and they made her uncomfortable around him, self-conscious.

Every good and great idea must have a good window and doors

A man is not old until regrets take the place of dreams.

I want to make sure that nobody's dying on the streets when I'm president.

In every loving woman there is a priestess of the past

From a moral point of view, there is no excuse for terrorist acts, regardless of the motive or the situation under which they are carried out.

Education is anything that we do for the purpose of taking advantage of the experience of some one else.

We all dream about love, want to be in love, and have been hurt by love.

I want to do drawings which touch some people... In either figure or landscape I wish to express, not sentimental melancholy, but serious sorrow.