It may seem that Berkeley's treatment of imagination is neither problematic, nor original, in so far as he simply seems to repeat what Locke has said on this subject. However, Berkeley attributes to imagination a creative spontaneity that makes it a very special faculty, and he insists on the power (and limits) of this faculty in a very particular way. In so doing, he surreptitiously reintroduces a principle of differentiation at the epistemological level, one that can also, mutatis mutandis, be found at the moral level in his opposition to the free thinkers. Copyright 2010 P.U.F. All rights reserved.