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OF THE NATURE OF NECESSITY.
But Plato distinguisheth and refers some things to Providence, others to necessity.

Empedocles makes the nature of necessity to be that cause which employs principles and elements.

Democritus makes it to be a resistance, impulse, and force of matter.

Plato sometimes says that necessity is matter; at other times, that it is the habitude or respect of the efficient cause towards matter..