Carl Sagan

In the long run, the aggressive civilizations destroy themselves, almost always. It’s their nature . They can’t help it.

Carl Sagan

It does no harm to the romance of the sunset to know a little bit about it.

Carl Sagan

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

Carl Sagan

It is said that men may not be the dreams of the god, but rather that the gods are the dreams of men.

Carl Sagan

It is the tension between creativity and skepticism that has produced the stunning and unexpected findings of science.

Carl Sagan

It means nothing to be open to a proposition we don’t understand.

Carl Sagan

It’s hard to kill a creature once it lets you see its consciousness.

Carl Sagan

It’s sometimes easier to reject strong evidence than to admit that we’ve been wrong, this is information about ourselves worth having.

Carl Sagan

Knowing a great deal is not the same as being smart; intelligence is not information alone but also judgement, the manner in which information is coordinated and used.

Carl Sagan

Life is but a momentary glimpse of the wonder of this astonishing universe, and it is sad to see so many dreaming it away on spiritual fantasy.

Carl Sagan