"A catalyst is a substance which alters the velocity of a chemical reaction without appearing in the final products."

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Appearing better than others is always dangerous, but most dangerous of all is to appear to have no faults or weaknesses. It is smart to occasionally display defects, and admit to harmless vices, in order to deflect envy and appear more human and approachable. Only gods and the dead can seem perfect with impunity.

— Robert Greene