"The days of life are consumed, one by one, without an object beyond the present moment; ever flying from the ennui of that, yet carrying it with us; eternally in pursuit of happiness, which keeps eternally before us. If death or bankruptcy happen to trip us out of the circle, it is matter for the buzz of the evening, and is completely forgotten by the next morning."

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[T]ruly grand and powerful theories [...] do not and cannot rest upon single observations. Evolution is an inference from thousands of independent sources, the only conceptual structure that can make unified sense of all this disparate information. The failure of a particular claim usually records a local error, not the bankruptcy of a central theory. [...] If I mistakenly identify your father's brother as your own dad, you don't become genealogically rootless and created de novo. You still have a father; we just haven't located him properly.

— Stephen Jay Gould