Going out of style isn't a natural process, but a manipulated change which destroys the beauty of last year's dress in order to make it worthless.

A first principle not formally recognized by scientific methodologists: when you run into something interesting, drop everything else and study it.

To say that... behaviors have different 'meanings' is only another way of saying that they are controlled by different variables.

Give me a child and I'll shape him into anything.

Teachers must learn how to teach ... they need only to be taught more effective ways of teaching.

In the world at large we seldom vote for a principle or a given state of affairs. We vote for a man who pretends to believe in that principle or promises to achieve that state. We don't want a man, we want a condition of peace and plenty-- or, it may be, war and want-- but we must vote for a man.

It has always been the task of formal education to set up behavior which would prove useful or enjoyable later in a student's life.