"I find enough mystery in mathematics to satisfy my spiritual needs. I think, for example, that pi is mysterious enough (don't get me started!) without having to worry about God. Or if pi isn't enough, how about fractals? or quantum mechanics?"

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I define Inner Space as an imaginary realm in which on the one hand the outer world of reality, and on the other the inner world of the mind meet and merge. Now, in the landscapes of the surrealist painters, for example, one sees the regions of Inner Space; and increasingly I believe that we will encounter in film and literature scenes which are neither solely realistic nor fantastic. In a sense, it will be a movement in the interzone between both spheres.

— J. G. Ballard