Morris Raphael Cohen

"Liberalism is an attitude rather than a set of dogmas - an attitude that insists upon questioning all plausible and self-evident propositions, seeking not to reject them but to find out what evidence there is to support them rather than their possible alternatives."

"Cruel persecutions and intolerance are not accidents, but grow out of the very essence of religion, namely, its absolute claims."

"A creative element is surely present in all great systems, and it does not seem possible that all sympathy or fundamental attitudes of will can be entirely eliminated from any human philosophy."