"I'm sure the universe is full of intelligent life. It's just been too intelligent to come here."

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A great man, who was convinced that the truths of political and moral science are capable of the same certainty as those that form the system of physical science, even in those branches like astronomy that seem to approximate mathematical certainty. He cherished this belief, for it led to the consoling hope that humanity would inevitably make progress toward a state of happiness and improved character even as it has already done in its knowledge of the truth.

— Nicolas de Caritat, marquis de Condorcet