"Livius, Thales of Miletus by Jona Lendering"

“Nothing is more ancient than God, for He was never created; nothing more beautiful than the world, it is the work of that same God; nothing is more active than thought, for it flies over the whole universe; nothing is stronger than necessity, for all must submit to it.”

“Thales of Miletus from The Internet Encyclopedia of Philosophy”

“Placing your stick at the end of the shadow of the pyramid, you made by the sun's rays two triangles, and so proved that the pyramid was to the stick as the shadow of the pyramid to the shadow of the stick.”

“Water is the first principle of everything.”

“Do not ask who started it. Finish it”

“Thales' Theorem - Math Open Reference”