It is the function of parents to see that their children habitually experience the true consequences of their conduct.

All socialism involves slavery. That which fundamentally distinguishes the slave is that he labours under coercion to satisfy anothers desires.

Every cause produces more than one effect.

Those who cavalierly reject the Theory of Evolution, as not adequately supported by facts, seem quite to forget that their own theory it supported by no facts at all.

Absolute morality is the regulation of conduct in such a way that pain shall not be inflicted.

In science the important thing is to modify and change one's ideas as science advances.

Progress is not an accident, not a thing within human control, but a beneficent necessity ... due to the working of a universal law. So surely must the things we call evil and immorality disappear; so surely must man become perfect.