William Henry Pyle

You are to help your students study human nature. You must, to some extent, be a psychologist yourself before you can teach psychology. You must yourself be a close and scientific student of human nature. Develop in the students the spirit of inquiry and investigation. Teach them to look to their own minds and their neighbor’s actions for verification of the statements of the text. Let the students solve by observation and experiment the questions and problems raised in the text and the exercises.

In other words, in science, we must not only know, we must not only have knowledge, but we must know the significance of the knowledge, must know its meaning.

The main difference between a scientist and one who is not a scientist is that the scientist sees the significance of facts, while the non-scientific man sees facts as more or less unrelated things.