“Among these philosophers [sc. Leucippus and Democritus] and before them, the Pythagoreans, as they are called, were the first do deal with mathematics and they made advances in this field; moreover, having been brought up in it, they believed the principles of mathematics to be the principles of everything there is … Since all other things seemed in their whole nature to be modeled on numbers, and numbers to be the first in all of nature, they held the elements of numbers to be the elements of everything there is.”
“Pythagoras taught that the original of all things is the monad, that from the monad sprung the duad, which is the subject matter to the efficient monad: that from the monad and infinite duad were formed the numbers: from the numbers the points; from them the lines, from these figures of superficies; from the superficies the solid figures; from these the solid bodies, of which are the elements, fire, water, earth, air:—that from these, changed and converted into every shape, is formed the world, which is animated, intelligent, of a spherical shape, comprehending in its middle the earth, which also is spherical and inhabited all round.”— Diogenes Laertius (230AD), Life of Pythagoras (Ѻ)
“Know, so far as is permitted thee, that nature is in all things uniform.”— Pythagoras (c.500BC), from Pythagorean scriptures by Clifford [6]