Comets giveth and comets taketh away.

Where we have strong emotions, we're liable to fool ourselves. (From the 'Cosmos' television series, 'Blues for the Red Planet')

The nature of life on Earth and the search for life elsewhere are two sides of the same question: the search for who we are.

When you make the finding yourself - even if you're the last person on Earth to see the light - you never forget it.

Some days you're the pigeon, some days you're the statue.

I saw the lightning's gleaming rod Reach forth and write upon the sky The awful autograph of God.

I cannot but think that he who finds a certain proportion of pain and evil inseparably woven up in the life of the very worms, will bear his own share with mor…