It is opposed to the various doctrines of FreeWill, known as voluntarism, libertarianism, indeterminism, and is from the ethical standpoint more or less akin to necessitarianism and fatalism.
The materialism of Hobbes, the pantheism of Spinoza, the empiricism of Locke, the determinism of Leibnitz, Collins' necessitarianism, Dodwell's denial of the natural immortality of the soul, rationalistic attacks on Christianity, and the morality of the sensationalists - all these he opposed with a thorough conviction of the truth of the principles which he advocated.
Libertas, freedom), in ethics, the doctrine which maintains the freedom of the will, as opposed to necessitarianism or determinism.
With the two last named he discussed the materialism of Priestley and the theory of necessitarianism.
In philosophy, Collins takes a foremost place as a defender of Necessitarianism.