Who said "The earth is a very small stage in a vast cosmic arena."?

This quote is attributed to Carl Sagan.

The earth is a very small stage in a vast cosmic arena. - Carl Sagan

"The earth is a very small stage in a vast cosmic arena."

Carl Sagan

Astronomer and Science Communicator American 1934–1996

"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."