A person's genetic endowment, a product of the evolution of the species, is said to explain part of the workings of his mind and his personal history the rest.

A permissive government is a government that leaves control to other sources.

A culture must be reasonably stable, but it must also change, and it will presumably be strongest if it can avoid excessive respect for tradition and fear of novelty on the one hand and excessively rapid change on the other.

A failure is not always a mistake, it may simply be the best one can do under the circumstances. The real mistake is to stop trying.

Indeed one of the ultimate advantages of an education is simply coming to the end of it.

Your liberals and radicals all want to govern. They want to try it their way- to show that people will be happier if the power is wielded in a different way or for different purposes. But how do they know? Have they ever tried it? No, it's merely their guess.

The strengthening of behavior which results from reinforcement is appropriately called 'conditioning'. In operant conditioning we 'strengthen' an operant in the sense of making a response more probable or, in actual fact, more frequent.