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Full Idea
Sometimes the pursuit of explanation is more the pursuit of unified and general fundamental laws than of information about the causal histories of events.
Gist of Idea
Often explanaton seeks fundamental laws, rather than causal histories
Source
David Lewis (On the Plurality of Worlds [1986], 2.7)
Book Ref
Lewis,David: 'On the Plurality of Worlds' [Blackwell 2001], p.131
A Reaction
It is hard to disagree, given the 'sometimes'. I don't think that Newton's Law of Gravity (say), with its lovely equation, actually explained anything at all about gravity. Finding the law closes the quest for an accurate description of what happens.