Pythagoras

While other Philosophers were deciding what basic material the world was made up of, or what God's nature was, Pythagoras was more concerned with deciding what ordered the cosmos. While everyone else was concerned with substance, Pythagoras was more concerned with method. None of Pythagoras's aphorisms provided to us even show that he expressed an interest in encountering any sort of divinity or source of the order that the universe demonstrated.

He did, however, believe that both humans and animals have souls, which must mean that he was concerned with some aspect of the transcendence of temporal life. Usually this sort of thinking reveals a belief in a deity or theory about an afterlife. One of the aphorisms attributed to him mentions the cyclical-reincarnation theories of the Egyptians, which in true Pythagorean nature, is precise and ordered, stipulating that the soul must past through all terrestrial, winged, and marine animals before becoming human again, and that the entire circuit takes 3,000 years. 3,000 years is an even number, and is divisible by 10.

Pythagoras's quest for order overflowed into every aspect of his life, as evidenced by aphorism # 14.

Do not stir the fire with a knife - Use things for their proper purpose, like spoons for stirring.
Rub out the mark of a pot in the ashes - Restore things to their previous, ordered condition.
Do not wear a ring - I suppose you'd need to wear two, so it would be an even number...
(Etc).

I know that many Philosophy/Humanities majors may comment that Math is not their thing (as I was just about to end my post by doing), however, I realized that there is always a certain order to thought processes presented in philosophical theses, and that order is what enables us to understand the progression of an argument (though I am doubtful as to whether this is the type of order Pythagoras meant), and so, even a Math-hater can find a reason to love Pythagoras! After all, the first philosophers were "Natural Philosophers", whom we now refer to as "Scientists," and at many points the disciplines of science, math, and Philosophy are intertwined - perhaps that point is in regard to the natural, mathematical, and moral order of the universe.