Spinoza follows Maimonides in rejecting the ordinary meanings which attach to words, and in asking his readers to attend, not to language, but to the 'ideas' which he is attempting to convey by means of it. Common usage is governed by the imagination, which associates words, not with clear and distinct ideas, but with the confused conceptions of experience. In the language of imagination nothing can be truly described, and nothing is more misleadingly rendered by the imagination than the ultimate subject matter of philosophical speculation - God himself