William Henry Pyle

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.

As one comes to hunt for causes and inquire into the significance of things, one becomes a scientist.