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

Once upon a time when there was no time.

Once upon a time there was no Time.

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

One would normally define a religion as a system of ideas that contain statements that cannot be logically or observationally demonstrated... Gödels theorem not only demonstrates that meathematics is a religion, but shows that mathematics is the only religion that proves itself to be one!

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

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

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

Apparently, a great deal of dark, unseen material exists, whose gravitational pull is responsible for the motions of the stars and galaxies that we see.