The cosmos according Philolaus

Philolaus, fifth century A.C physician and philosopher

Philolaus had the great merit of disseminating the concepts and principles of the philosophical Pythagorean doctrine.

For Philolaus there are four elements: fire, water, ground and air, changing and moving through it all. These elements constitute the Cosmos (animated, thinking, spherical), whose center is the earth (spherical, inhabited).
The four elements are equal in the cosmos:

- Light / dark
- Hot / cold
- Dry / Wet

When the heat is greater than the cold summer has, when the heat is less than the cold winter has. When hot and cold does not prevail on each other you have the spring, leading saute and autumn, which brings disease.