When we think of Pythagoras, what immediately comes to our mind is the famous Pythagorean Theorem which outshines all the other significant contributions of this great man considered as Father of Pure Mathematics and who coined the term Philosophy by calling himself Philosophos- the lover of wisdom. For him, everything was numbers and entire universe was mathematically arranged as cosmos. His mathematical and ethical teachings greatly influenced the people then and continue to do so till today. In this book an attempt is made to study the various aspects of teachings of Pythagoras.