The difference between a moral man and a man of honor is that the latter regrets a discreditable act, even when it has worked and he has not been caught.

Sometimes I feel something akin to rage At the corrupted morals of this age!

The essence of morality is the subjugation of nature in obedience to social needs.

Social taboos are shy like virtue; once lost, there is no remedy

Physical science will not console me for the ignorance of morality in the time of affliction. But the science of ethics will always console me for the ignorance of the physical sciences.

When reason and instinct are reconciled, there will be no higher appeal.

Ethics is in origin the art of recommending to others the sacrifices required for co-operation with oneself.

Without civic morality communities perish; without personal morality their survival has no value.

Our virtues Lie in th' interpretation of the time.

Morality consists of suspecting other people of not being legally married.