# It is well within our power to destroy our civilization and perhaps our species as well by Carl Sagan > "It is well within our power to destroy our civilization and perhaps our species as well." > **— Carl Sagan**, *Cosmos-era writings, attribution clue* Verification Status: Unverified — exact wording/source has not yet been independently confirmed against a primary source; source clue: Cosmos-era writings, attribution clue.