"Find out for yourself what are the possesions and ideals that you do not desire. By knowing what you do not want, by elimination, you will unburden the mind, and only then will it understand the essential which is ever there."

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The body of science is not, as it is sometimes thought, a huge coherent mass of facts, neatly arranged in sequence, each one attached to the next by a logical string. In truth, whenever we discover a new fact it involves the elimination of old ones. We are always, as it turns out, fundamentally in error.

— Lewis Thomas