Enslave the liberty of but one human being and the liberties of the world are put in peril.
William Lloyd GarrisonHuman beings are the only creatures on earth that allow their children to come back home.
Bill CosbyI'm naturally an optimist, but my basis for hope is rooted in my understanding of human nature.
Al GoreThe natural flights of the human mind are not from pleasure to pleasure, but from hope to hope.
Samuel JohnsonPsychology keeps trying to vindicate human nature. History keeps undermining the effort.
Mason Cooley