Anaxagoras also is a Greek philosopher was the first philosopher to bring philosophy from Ionia to Athens. Anaxagoras’ innovative theory of physical nature is a portion of everything in everything. Which means everything contains a portion of everything else, and a large piece of something contains as many portions as a small piece of it, though they differ in size; but every substance does not contain all the infinite number of substances in equal proportions.
Xenophanes is a Greek philosopher who said that that earth and water are the principle stuffs of nature and, based in part on his observations of fossils, he held the view that our world has gone through alternating periods of extreme wetness and dryness. He also explained that a rainbow is nothing but a cloud.
Hippocrates is a Greek philosopher considered one of the most outstanding figures in the history of medicine. He is the first person to believe that diseases were caused naturally, not because of superstition and God. Also he believed that every medical condition there is a scientific explanation has the opposite of what was widespread in his time. Hippocrates treated with the human body as a single threaded, which is the first to describe disease, pneumonia and epilepsy in children, which is the first to say that the basis of health is healthy food and fresh air, cleanliness and comfort.
Leucippus is a Greek philosopher who was the founder of Atomism. He said movement does in fact exists since movement exists there must be vacuum, but that since vacuum cannot really be it must be identified with not being. Also he said the