‘Hume’s point is that we sometimes form complex ideas for which there is no corresponding object in the physical world. We’ve already talked about angels. Previously we referred to crocophants. Another example is Pegasus, a winged horse. In all these cases we have to admit that the mind has done a good job of cutting out and pasting together all on its own. Each element was once sensed, and entered the theater of the mind in the form of a real “impression.” Nothing is ever actually invented by the mind. The mind puts things together and constructs false “ideas.”’
