may 19, 384 BC - Aristotle and his theory (384 BC - 322 BC)
Description:
Aristotle was a Greek philosopher and scientist; he happened to disagree with Democritus. Aristotle favored [this theory] and theorized that everything was made up of air, water, earth, and fire. This theory was not contradicted until much, much later in the 17th century.Added to timeline:
Date:
may 19, 384 BC
Now
~ 2412 years ago