All nature is a vast symbolism: Every material fact has sheathed within it a spiritual truth.

We do not know why we are born into the world, but we can try to find out what sort of a world it is - at least in its physical aspects.

Past time is finite, future time is infinite.

The history of astronomy is a history of receding horizons.

The universe is unfolding as it should.

I knew that even if I were second or third rate, it was astronomy that mattered.

Science is the one human activity that is truly progressive. The body of positive knowledge is transmitted from generation to generation.

Not until the empirical resources are exhausted, need we pass on to the dreamy realms of speculation.

Wisdom cannot be directly transmitted, and does not readily accumulate through the ages.

The great spirals, with their enormous radial velocities and insensible proper motions, apparently lie outside our Solar system.

There we measure shadows, and we search among ghostly errors of measurement for landmarks that are scarcely more substantial.

AC/DC is very easy to miao along to!

She'd just thrown gasoline on the fire. Now it was up to fandom to keep it burning.

You see, insanity runs in my family. It practically gallops.

Never feel too small or powerless to make a difference.

I prefer surveying for a week to spending a week in fashionable society even of the best class.

There are always protests, whether you do something good or bad. Even if you do something beneficial, people say you do it because it's advertising.

I wouldn't want to try to adapt something of my own. It would be like going back to school and doing all my exams again.

Interestingly, the very experience of fear itself is the tip-off moment, the signal that a possibility for action is opening up and so a choice needs to be made.

The universe is a great university.

Don't be afraid to dream of achieving the impossible.