Carl Sagan

Humans are very good at dreaming, although you’d never know it from your television.

Carl Sagan

I believe our future depends powerfully on how well we understand this cosmos in which we float, like a mote of dust in the morning sky.

Carl Sagan

I believe that in every person is a kind of circuit which resonates to intellectual discovery – and the idea is to make that resonance work.

Carl Sagan

I believe that the extraordinary should be pursued. But extraordinary claims require extraordinary evidence.

Carl Sagan

I consider it an extremely dangerous doctrine, because the more likely we are to assume that the solution comes from the outside, the less likely we are to solve our problems ourselves.

Carl Sagan

I find science so much more fascinating than science fiction. It also has the advantage of being true.

Carl Sagan

I hold that popularization of science is successful if, at first, it does no more than spark the sense of wonder.

Carl Sagan

I think if we ever reach the point where we think we thoroughly understand who we are and where we came from, we will have failed.

Carl Sagan

If a human disagrees with you, let him live. In a hundred billion galaxies, you will not find another.

Carl Sagan

If I finish a book a week, I will read only a few thousand books in my lifetime, about a tenth of a percent of the contents of the greatest libraries of our time. The trick is to know which books to read.

Carl Sagan