“You know the answers, but just between ourselves, that sketch smells a bit. It’s sloppy.” “I never did have any artistic talent,” Art said defensive… - Robert A. Heinlein

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“You know the answers, but just between ourselves, that sketch smells a bit. It’s sloppy.”
“I never did have any artistic talent,” Art said defensively. “I’d rather take a photograph any day.”
“You’ve taken too many photographs, maybe. As for artistic talent, I haven’t any either, but I learned to sketch. Look, Art—the rest of you guys get this, too—if you can’t sketch, you can’t see. If you really see what you’re looking at, you can put it down on paper, accurately. If you really remember what you have looked at, you can sketch it accurately from memory.”
“But the lines don’t go where I intend them to.”
“A pencil will go where you push it. It hasn’t any life of its own. The answer is practice and more practice and thinking about what you are looking at. All of you lugs want to be scientists. Well, the ability to sketch accurately is as necessary to a scientist as his slipstick. More necessary, you can get along without a slide rule.”