"We find that Β (the defining concept) is more clearly delineated in our experience and typically more concrete than A (the defined concept). Moreover, there is always more in the defining concept than is carried over to the defined concept." (#60 1923)

"We have explained this asymmetry in the following way: the less clearly delineated (and usually less concrete) concepts are partially understood in terms of the more clearly delineated (and usually more concrete) concepts, which are directly grounded in our experience." (#60 1926)

"we tend to structure the less concrete and inherently vaguer concepts (like those for the emotions) in terms of more concrete concepts, which are more clearly delineated in our experience." (#60 1977)

"We have seen that metaphor pervades our normal conceptual system. Because so many of the concepts that are important to us are either abstract or not clearly delineated in our experience (the emotions, ideas, time, etc.), we need to get a grasp on them by means of other concepts that we understand in clearer terms (spatial orientations, objects, etc.)." (#60 2012)