“The ability to make love frivolously is the chief characteristic which distinguishes human beings from the beasts.”
“Philanthropic people lose all sense of humanity. It is their distinguishing characteristic.”
“A truly civilized society establishes the values and morals which distinguish human beings from animals.”
“Without feelings of respect, what is there to distinguish men from beasts?”
“It is the chief characteristic of the religion of science that it works.”
“Because reason...is the only thing that makes us men, and distinguishes us from the beasts, I would prefer to believe that it exists, in its entirety, in each of us...”