Man cannot live for more than a few minutes without air, but he can live for a few days without water. And in the absence of other food, he can subsi… - Mahatma Gandhi

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Man cannot live for more than a few minutes without air, but he can live for a few days without water. And in the absence of other food, he can subsist on water alone for many days. There is more than 70% of water in the composition of our food-stuffs, as in that of the human body. ... Even though water is so indispensable, we take hardly any pains to keep it pure. ... Perfectly pure water has a most beneficial effect on the system; hence doctors administer distilled water to their patients. ... One should drink water only when one feels thirsty, and even then only just enough to quench the thirst. There is no harm in drinking water during the meals or immediately afterwards. Of course, we should not wash the food down with water. If the food refuses to go down of itself, it means that either it has not been well prepared or the stomach is not in need of it. ... Our blood has in itself the power of destroying many of the poisonous elements that enter into it, but it has to be renewed and purified (Chapter IV, Water)