Contingency (n.) is a necessary fiction: since we are ignorant of how things are actually linked, it is better for right living — indeed necessary — to regard them as contingent.
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Contingency (n.) and perishableness mean only that we have no adequate idea of how long things will last.
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Contingency (n.) is the wavering of imagination: picture tomorrow evening with sometimes Simon in it, sometimes James, and neither seems certain.
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Contingency (n.) does not exist: everything is determined by the necessity of the divine nature not only to exist but to act in a particular way.
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Contingency (n.) names nothing in things, only the imperfection of our knowledge: we call a thing possible when the order of causes escapes us.