"Our physical senses and our embodied brains allow us to perceive only a small fraction of reality. We cannot see microbes or untraviolet light, for example. We can hear only a small range of sounds. When we try to describe the otherworld of energies and spirits, we are limited not only by our bodily constraints but by the expectations, assumptions, and language patterns ingrained in us by the culture we were raised in."

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The basic idea that the purpose of life is to be happy or is to experience the most favorable ratio of pleasure to suffering or productivity to work or gratification to sacrifice or any of that stuff, which, you know, a couple generations ago, to say that kind of stuff would have made you, you know, a freak - a freak and an Epicurean - and now seems to be so much - simply an unquestioned assumption of the culture that we don't really even talk about it anymore.

— David Foster Wallace