Friday 24 July 2020

Nailing Maths with Pythagoras


Most of us have long heard of the name of Pythagoras even before any concepts of Presocratic philosophy or ancient Greek history are being brought up. We probably first met Pythagoras in the maths lesson rather than the history lesson though – remember the famous theorem about right-angled triangles and how that led to all the crazy trigonometric implications (with an extra sprinkling of vectors in some cases) and another mathematical challenge that took the big brains centuries to solve? From the following two articles, you will find that Pythagoras and his followers, collectively known as the Pythagoreans, were more than a bunch of maths geeks!

Pythagoras was one of the most important philosophers of the Presocratic era. Not only having a lot of contributions to mathematics, the philosopher has also contributed a lot of original ideas to Western intellectual history. It is curious to note that no writings have been attributed to Pythagoras – all of his teachings were compiled by his school of followers and subsequent thinkers who were influenced by him. Pythagoras has led a number of followers and formed a community which were very committed to their shared philosophical outlook – simple living to nurture one's mind, tolerance and a reasonably egalitarian attitude to all the members. Since the Pythagoreans have unfortunately rubbed up the wrong way with political figures of their era for a couple of times, they were forced into seclusion and hence led an increasingly ascetic lifestyle. The legacy of Pythagoras sustained long after his death, for the next few centuries the Pythagorean school was further developed and their ideas spread throughout Greece. Pythagoras had a strong influence on philosophers like Parmenides, Plato and the so-called neo-Pythagoreans of the later centuries.

While a lot of mathematical achievements have been attributed to the Pythagorean school, it is important to appreciate that their ultimate motivation was a philosophical one rather than a mathematical one – like examples Euclid or Archimedes. Like the other Presocratic thinkers, the Pythagoreans wished to discover the physis of things – the nature and origin of the universe. The reason why mathematics, specifically numbers, were so important for the Pythagoreans was because they saw perfection in the numbers. To the Pythagoreans, perfection meant something rational and harmonious. The rationalist outlook was the most important perspective for this school of Presocratic thinkers, and to them, numbers (like the Pythagorean triples), musical chords, and a rational soul were examples of something in harmony.

Numbers as universals

The modern readers are likely to be puzzled by such a speculative and abstract worldview, yet it is the imaginative side typical of these ancient thinkers. It was widely believed that Pythagoras was the first thinker to coin the term ‘kosmos’. To the Pythagoreans, the origin of the universe was known as 'Monad'. It was a kind of 'number generator' that worked in a rational way to generate everything in existence in the universe. The Pythagoreans believed that everything in the universe was related in a rational way. The whole universe was originated from numbers and everything in it was modelled on numbers. The cosmo was operated through mathematical relations and these were manifested in the resulting harmony from the universe.

Such a theory bore some resemblance to the deism proposed by the scientists and natural philosophers of Europe from the Enlightenment. Scientists like Isaac Newton asserted that God created the world and let the world operate by reason, through mechanical laws of causes and effects.

As the Pythagoreans was enthusiastic about the discussion of the cosmos, they have also engaged in the discussion of physis. Philolaus, a famous Pythagorean philosopher, suggested the whole world-order was comprised of two contrasting attributes – the unlimited and the limiters. Along with other things that came into existence, these aspects constructed the cosmos as a harmonious order.


by Ed Law 
Conatus Classics