Thales is considered the founder of Greek philosophy
. He is said to have used his knowledge of science
to predict a solar eclipse
and other natural phenomena
. He believed that the Earth
was a flat disc
that floated on water
, and that the principle of all things is water (i.e., everything comes from water, and everything eventually returns to water). Thus he believed that everything in the universe
was just a modification of water.
He is thought to have introduced the concept of geometry, although this cannot be proven. He was also probably the first Greek philosopher who looked for a physical origin of the world instead of attributing everything to mythology.
None. Thales never wrote anything, and therefore there are no quotes of him in existence.