Full Idea
As to causation, the true idea of the human mind is to consider it as a system of different perceptions, which are linked together by the relation of cause and effect, and mutually produce, destroy, influence and modify each other.
Gist of Idea
Causation unites our perceptions, by producing, destroying and modifying each other
Source
David Hume (Treatise of Human Nature [1739], I.IV.6)
Book Reference
Hume,David: 'A Treatise of Human Nature', ed/tr. Selby-Bigge/Nidditch [OUP 1978], p.261
A Reaction
He suggests that the associations of memory and causation might be sufficient to produce identity of the mind, and he gives the priority to memory. Eventually the good empiricist despairs because you cannot experience the links.
Related Idea
Idea 21305 Memory not only reveals identity, but creates it, by producing resemblances [Hume]