 The implications of this view for the concept of meaning or for nominalisations of the verb ‘to mean’ are important. We are not at all likely to be misled by expressions of the form ‘x means what y means.’ But when we use the expression quasi-descriptively, as in ‘The meaning of x is the same as the meaning of y’ or ‘The meaning of x is doubtful’ we are liable to be misled into thinking that we are referring to some queer new object. Ryle generalises the point to suggest that all the mistaken doctrines of concepts, ideas, terms, judgment, contents, and the like derive from the fallacy