“Necessity is the mother of invention.”

“Then the lover, who is true and no counterfeit, must of necessity be loved by his love.”

“He was a wise man who invented God.”

“For a man to conquer himself is the first and noblest of all victories.He was a wise man who invented beer”

“I shall try to persuade first the Rulers and soldiers, and then the rest of the community, that the upbringing and education we have given them was all something that happened to them only in a dream. In reality they were fashioned and reared, and their arms and equipment manufactured, in the depths of the earth, and Earth herself, their mother, brought them up, when they were complete, into the light of day; so now they must think of the land in which they live as their mother and protect her if she is attacked, while their fellow citizens they must regard as brothers born of the same mother earth…. That is the story. Do you know of any way of making them believe it?” “Not in the first generation,” he said, “but you might succeed with the second, and later generations.”

“Imagine that the keeper of a huge, strong beast notices what makes it angry, what it desires, how it has to be approached and handled, the circumstances and the conditions under which it becomes particularly fierce or calm, what provokes its typical cries, and what tones of voice make it gentle or wild. Once he's spent enough time in the creature's company to acquire all this information, he calls it knowledge, forms it into a systematic branch of expertise, and starts to teach it, despite total ignorance, in fact, about which of the creature's attitudes and desires is commendable or deplorable, good or bad, moral or immoral. His usage of all these terms simply conforms to the great beast's attitudes, and he describes things as good or bad according to its likes and dislikes, and can't justify his usage of the terms any further, but describes as right and good the things which are merely indispensable, since he hasn't realised and can't explain to anyone else how vast a gulf there is between necessity and goodness.”

“To conquer oneself is the best and noblest victory; to be vanquished by one's own nature is the worst and most ignoble defeat.”