Many of the world's great religions describe life in terms of a journey; the Buddhist Nirvana is actually “the Middle Way”, the Tao in Taoism is simply “the Way” or “the Road”.
So when Robert Matzdorff, philosopher extraordinary and a rider with more than 40 years of experience, set out to answer the biggest questions of all, such as “Why are we here?”, “What is the purpose of life” and “Is there a God?”, it was natural to approach them in terms of motorcycles.
The balance of Yin and Yang, on which Zen is based, can after all be explained in terms of the balance between gravity and centrifugal force, without which no motorcycle would ever go round a corner. And karma is no more than cause and effect, which governs every aspect of motorcycle engines - including breakdowns.
Which is why his book is called “The Metaphysics of Motorcycling” - and right from Chapter One he points out that metaphysics (literally “beyond the physical”) is not a remote discipline divorced from reality but a very real part of our lives.
Gravity, as mentioned before, is central to cornering - yet nobody knows how it works; that's a metaphysical forces in the truest sense of the word. The same is true of magnetism, without which no motorcycle would have an ignition system.