And then Isaac Newton, of course, is maybe the premier scientist in the concept of gravity and really figuring out how the world worked around us. And these are important ideas because it really kind of breaks off into now that we know we can investigate and find out things, what else can we do? What else can we explore? And really the scientific method deals with the natural world, things that are proven, you know, science, astronomy, weather, geology, physics, chemistry, all the ominous. But now we can go into the social, psychology, sociology, and really that's going to be kicked off by, I'll give you some more names now, Descartes. And again, I'm a butcher of names, you can see D-E-S-C-A-R-T-E-S, Descartes. I remember him because I'm a vegetarian and he's the guy who said that animals were machines.