Thirst
Thirst is the craving for fluids, resulting in the basic instinct of animals to drink. It is an essential mechanism involved in fluid balance. It arises from a lack of fluids and/or an increase in the concentration of certain osmolites, such as salt. If the water volume of the body falls below a certain threshold or the osmolite concentration becomes too high, the brain signals thirst.
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Famous quotes containing the word thirst:
“Uncontrolled, the hunger and thirst after God may become an obstacle, cutting off the soul from what it desires. If a man would travel far along the mystic road, he must learn to desire God intensely but in stillness, passively and yet with all his heart and mind and strength.”
—Aldous Huxley (1894–1963)
“Children don’t read to find their identity, to free themselves from guilt, to quench the thirst for rebellion or to get rid of alienation. They have no use for psychology.... They still believe in God, the family, angels, devils, witches, goblins, logic, clarity, punctuation, and other such obsolete stuff.... When a book is boring, they yawn openly. They don’t expect their writer to redeem humanity, but leave to adults such childish illusions.”
—Isaac Bashevis Singer (20th century)
“We can conceive a thinking being to have either many or few perceptions. Suppose the mind to be reduced even below the life of an oyster. Suppose it to have only one perception, as of thirst or hunger. Consider it in that situation. Do you conceive any thing but merely that perception? Have you any notion of self or substance? If not, the addition of other perceptions can never give you that notion.”
—David Hume (1711–1776)