You of all people, as a natural philosopher, should appreciate that.

At the time when he lived, people like him were called natural philosophers.

"Oh, he is the Jewish natural philosopher you told me about?"

He studied him natural philosopher examining some new species of insect.

"You look like a natural philosopher studying the behavior of penguins."

They are, in fact, just the kind of thing the natural philosopher might be interested in.

The two natural philosophers above could not exist in such an environment and found their own ways to fight this stagnant situation.

For the natural philosophers knew certain things were possible, even if they didn't know how, and this was half the battle.

During these years his career as a natural philosopher began to take off.

In the old days, they burned the mills and put their natural philosophers on the rack.