The Association of ideas (n.) is a gentle force, not a chain: it commonly prevails, which is why the world's languages so nearly correspond.
The Association of ideas (n.) is a kind of attraction in the mental world, with effects as extraordinary as gravity's in the natural one — and causes just as unknown.
The Association of ideas (n.) works so silently we discover it only by its effects; it produces no emotion of its own, so alone it can never raise a passion.
The Association of ideas (n.) runs on only three rails: resemblance (a picture leads to the original), contiguity (one room to the next), and cause and effect (a wound to its pain).
The Association of ideas (n.) is, for us, the cement of the universe: the only links binding its parts together or connecting us with anything outside ourselves.