Carl Sagan on nature

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

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

Extraordinary claims require extraordinary proof.

Every day, man is making bigger and better fool-proof things, and every day, nature is making bigger and better fools. So far, I think nature is winning.

Albert Einstein1879–1955

Nature does nothing uselessly.

Aristotle384–322 BCPolitics, Book I, 1253a.8

Nature scarcely ever gives us the very best; for that we must have recourse to art.

Baltasar Gracián1601–1658

• Art