Knowledge is awareness, and to it are many paths, not all of them paved with logic. But sometimes one is guided through the maze by intuition. One is led by something felt on the wind, something seen in the stars, something that calls from the wasteland to the spirit.
Today you can buy the Dialogues of Plato for less than you would spend on a fifth of whiskey, or Gibbon's Decline and Fall of the Roman Empire for the price of a cheap shirt. You can buy a fair beginning of an education in any bookstore with a good stock of paperback books for less than you would spend on a week's supply of gasoline.
When at the typewriter I am no longer where I site but am away across the mountains, in ancient cities or on the Great Plains among the buffalo. Often I think of what pitiful fools are those who use mind-altering drugs to seek feelings they do not have, each drug taking a little more from what they have of mind, leaving them a little less. Give the brain encouragement from study, from thinking, from visualizing, and no drugs are needed.
Do not let yourself be bothered by the inconsequential. One has only so much time in this world, so devote it to the work and the people most important to you, to those you love and things that matter. One can waste half a lifetime with people one doesn't really like, or doing things when one would be better off somewhere else.
I have read my books by many lights, hoarding their beauty, their wit or wisdom against the dark days when I would have no book, nor a place to read. I have known hunger of the belly kind many times over, but I have known a worse hunger: the need to know and to learn.