It is also reported that he hypothesized an imperceptible substance called aperion that was a synthesis of contrasting qualities such as hot and cold and wet and dry.
Nietzsche called him "the first philosophic author of the ancients." He reportedly was the first person known to suggest that the Earth was not supported in the heavens, but that it rested at the center of the universe, as it had no reason to go anywhere else. It is also reported that he hypothesized an imperceptible substance called aperion that was a synthesis of contrasting qualities such as hot and cold and wet and dry. FTP, identify this pre- Socratic philosopher, who thought that unity was at the base of all multiplicities, a Miletian follower of Thales.
Nietzsche called him "the first philosophic author of the ancients.
{Anaximander}