“What is straight? A line can be straight, or a street, but the human heart, oh, no, it's curved like a road through mountains.”

“Straight is the line of Duty, Curved is the line of Beauty, Follow the straight line, thou shall see. The curved line ever follow thee.”

“A Curve does not exist in its full power until contrasted with a straight line.”

“Human knowledge is not (or does not follow) a straight line, but a curve, which endlessly approximates a series of circles, a spiral. Any fragment, segment, section of this curve can be transformed (transformed one-sidedly) into an independent, complete, straight line, which then (if one does not see the wood for the trees) leads into the quagmire, into clerical obscurantism (where it is anchored by the class interests of the ruling classes).”

“But the trouble is there aren't any bends in my road. I can see it stretching straight out before me to the sky-line…endless monotony. Oh, does life ever frighten you, Anne, with its blankness…its swarms of cold, uninteresting people?”

“This path, this road that is one perfect straight line even if it goes around the world through heat and fog and rain and snow and it's my life I keep thinking. It's my life.”