Abstract

George Berkeley's arguments have attracted a good deal of attention, but the account of abstraction has been often treated as if it were an entirely independent piece of writing. Berkeley links Locke's use of abstract general ideas to a belief in the possibility of an idea of existence abstracted from perception, that is, to the central issue of the Principles of Human Knowledge. The mistake Berkeley has been pointing to, the reliance on abstract general ideas, is a philosophical mistake, but here it is clear Berkeley takes this mistake to have far‐reaching consequences, diverting the search for knowledge from what would be useful to know into trivial byways. Having identified the consequences of a mistaken belief in abstract ideas, Berkeley returns to his earlier claim, that it is language that leads us into this error.