The mind once enlightened cannot again become dark. Author: Thomas Paine Copy Quote More from Thomas Paine “Arguing with one who will not accept facts is like administering medicine to th…” “Nothing can appear more contradictory than the principles on which the old gove…” “I believe in the equality of man, and I believe that religious duties consist o…” “I love the man that smiles at trouble: that can gather strength from distress, …”