What is the Pythagoras contribution in psychology?

Pythagoras of Samoswas a pupil of Thales. He was a mathematician and philosopher. He coined the label "Philosopher", and was first to call himself a philosopher-lover of knowledge. He believed that soul was at home with numbers and the entire universe was ordered mathematically for providing scientific and beautiful yields. He believed in dualism, which separates matter and mind, body and soul, God and the world.

Pythagoras is known for the honor he gives to number. He believed Numbers have personalities, characteristics, strengths and weaknesses. and there are correspondences between the behavior of number and the behavior of things. Such correspondences were highlighted in Aristotle's book on the Pythagoreans, e.g., the female is likened to the number two and the male to the number three and their sum, five, is likened to marriage (Aristotle, Fr. 203).