We can judge our progress by the courage of our questions and the depth of our answers, our willingness to embrace what is true rather than what feels good.

Somewhere, something incredible is waiting to be known.

It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring.

The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.

Imagination will often carry us to worlds that never were. But without it we go nowhere.

I don't want to believe. I want to know.

The absence of evidence is not the evidence of absence.

The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.

We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.

For small creatures such as we the vastness is bearable only through love.

You have to know the past to understand the present.

To grant all a man's wishes is to take away his dreams and ambitions. Life is only worth living if you have something to strive for. To aim at.

And, " my dad concluded, calming down a little, "all our dignity consists in just that. I mean, man's little and can't fill time and space, but he sure can make use of the brain God gave him.

He who knows how to suffer everything can dare everything.

I knew if I waited around long enough something like this would happen.

When men are growing up and they're reading about Batman, Spiderman, Superman ... those are not fantasies ... they're options.

The very essence of your Being is infinite, eternal silence. It is your true nature. It is the essence of all existence.

It may sounds very stupid, I know, but I believe in love. As any important feeling and expression, it has been vulgarized a lot but what can we do?

It shows considerable wisdom to know what you want in life and then to direct all your energies towards getting it.

One of the more serious temptations which stifles boldness and zeal is a defeatism, which turns us into querulous and disillusioned pessimists, sourpusses.

The Moment I Knew" "was a song about my 21st birthday party, which was the worst experience ever.