If man has nothing to eat, fasting is the most intelligent thing he can do. If, for instance, Siddhartha had not learned to fast, he would have had to seek some kind of work today, either with you, or elsewhere, for hunger would have driven him. But as it is, Siddhartha can wait calmly. He is not impatient, he is not in need, he can ward off hunger for a long time and laugh at it. Therefore, fasting is useful, sir.

What is the fasting of the mind? If you merge all your intentions into a singularity and maintain the unity of your will, you will come to hear with the rational mind rather than with the ears. Further, you will come to hear with the ch’i – the primal spirit, the vital energy – rather than with the rational mind. For the ears are limited to listening, and the rational mind is limited to its preconceptions. But the ch’i is an abiding emptiness that awaits the arising of things. And the Dao alone is what gathers in this formless emptiness. And to merge with the Dao in this emptiness is ‘fasting of the mind’… Before I began my meditation, it was only ‘I’ that was real. But as soon as I came to dwell in stillness, it turned out that ‘myself’ had never even begun to exist! This is what is meant by 'becoming emptiness'.

The human body has an enormous capacity for adjusting to trying circumstances. I have found that one can bear the unbearable if one can keep one's spirit strong, even when one's body is being tested. Strong convictions are the secret of surviving deprivation. Your spirit can be full even when your stomach is empty.

There is so much pain and suffering involved in physical challenges that it’s the best training to take command of your inner dialogue, and the newfound mental strength and confidence you gain by continuing to push yourself physically will carry over to other aspects in your life. You will realize that if you were underperforming in your physical challenges, there is a good chance you are underperforming at school and work too.

Physically I was strong, but I was not even close to mastering my mind.

A physical shortcoming could produce a kind of mental excess. The process, it seemed, was reversible. Mental excess could produce, for its own purposes, the voluntary blindness and deafness of deliberate solitude, the artificial impotence of asceticism.

The body should be strong enough to obey the mind; a good servant must be strong. I know that intemperance stimulates the passions; in course of time it also destroys the body; fasting and penance often produce the same results in an opposite way. The weaker the body, the more imperious its demands; the stronger it is, the better it obeys. All sensual passions find their home in effeminate bodies; the less satisfaction they can get the keener their sting.

Over the years, I’ve gotten better and better at returning from mental and physical exhaustion…The fighter who can recover in the thirty seconds between rounds…will have a huge advantage over the guy who is still huffing and puffing, mentally or physically, from the last battle.

Notwithstanding the wickedness of the antediluvian world, that age was not, as has often been supposed, an era of ignorance and barbarism. The people were granted the opportunity of reaching a high standard of moral and intellectual attainment. They possessed great physical and mental strength, and their advantages for acquiring both religious and scientific knowledge were unrivaled. It is a mistake to suppose that because they lived [83] to a great age their minds matured late; their mental powers were early developed, and those who cherished the fear of God and lived in harmony with his will continued to increase in knowledge and wisdom throughout their life. Could illustrious scholars of our time be placed in contrast with men of the same age who lived before the Flood, they would appear as greatly inferior in mental as in physical strength. As the years of man have decreased, and his physical strength has diminished, so his mental capacities have lessened. There are men who now apply themselves to study during a period of from twenty to fifty years, and the world is filled with admiration of their attainments. But how limited are these acquirements in comparison with those of men whose mental and physical powers were developing for centuries!

Thou mayst as well expect to grow stronger by always eating as wiser by always reading. Too much overcharges nature, and turns more into disease than nourishment. 'Tis thought and digestion which make books serviceable, and give health and vigor to the mind.

If the body be feeble, the mind will not be strong. — Thomas Jefferson

Fasting

By Mevlana Jelaluddin Rumi
(1207 - 1273)

English version by Coleman Barks

There's hidden sweetness in the stomach's emptiness.
We are lutes, no more, no less. If the soundbox
is stuffed full of anything, no music.
If the brain and belly are burning clean
with fasting, every moment a new song comes out of the fire.
The fog clears, and new energy makes you
run up the steps in front of you.
Be emptier and cry like reed instruments cry.
Emptier, write secrets with the reed pen.
When you're full of food and drink, Satan sits
where your spirit should, an ugly metal statue
in place of the Kaaba. When you fast,
good habits gather like friends who want to help.
Fasting is Solomon's ring. Don't give it
to some illusion and lose your power,
but even if you have, if you've lost all will and control,
they come back when you fast, like soldiers appearing
out of the ground, pennants flying above them.
A table descends to your tents,
Jesus' table.
Expect to see it, when you fast, this table
spread with other food, better than the broth of cabbages.

Freedom, I found is not only in the running but in the heart, the mind, the hands.

How good one feels when one is full — how satisfied with ourselves and with the world! People who have tried it, tell me that a clear conscience makes you very happy and contented; but a full stomach does the business quite as well, and is cheaper, and more easily obtained.