Quote by Carl Sagan

"I think if we ever reach the point where we think we thoroughly understand who we are and why we are here, we will have failed."

Carl Sagan
Astronomer and Science Communicator American 1934–1996

More from Carl Sagan

"Somewhere, something incredible is waiting to be known."
"The cosmos is a vast living body, of which we are still parts."
"Science is a way of thinking much more than it is a body of knowledge."
"For small creatures such as we, the vastness is bearable only through love."

All quotes by Carl Sagan