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“... a mind needs books as a sword needs a whetstone, if it is to keep its edge.”
― George R.R. Martin, A Game of Thrones

“We can know only that we know nothing. And that is the highest degree of human wisdom.”
― Leo Tolstoy, War and Peace

“The Wild still lingered in him and the wolf in him merely slept.”
― Jack London, White Fang

“He had learned well the law of club and fang, and he never forewent an advantage or drew back from a foe he had started on the way to Death. He had lessoned from Spitz, and from the chief fighting dogs of the police and mail, and knew there was no middle course. He must master or be mastered; while to show mercy was a weakness. mercy did not exist in the primordial life. It was misunderstood for fear, and such misunderstandings made for death. Kill or be killed, eat or be eaten, was the law; and this mandate, down out of the depths of Time, he obeyed.”
― Jack London, The Call of the Wild