Carl Sagan

We live at a moment when our relationships to each other, and to all other beings with whom we share this planet, are up for grabs.

Carl Sagan

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

Carl Sagan

We start out a million years ago in a small community on some grassy plain; we hunt animals, have children, and develop a rich social, sexual, and intellectual life, but we know almost nothing about our surroundings.

Carl Sagan

We’re in very bad trouble if we don’t understand the planet we’re trying to save.

Carl Sagan

We’re made of star stuff. We are a way for the cosmos to know itself.

Carl Sagan

What an astonishing thing a book is.

Carl Sagan

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

Carl Sagan

Where we have strong emotions, we’re liable to fool ourselves.

Carl Sagan

While our behavior is still significantly controlled by our genetic inheritance, we have, through our brains, a much richer opportunity to blaze new behavioral and cultural pathways on short timescales.

Carl Sagan

Wisdom lies in understanding our limitations.

Carl Sagan