If the mind is subsidiary to the body, whatever the mind does is not of any worth, it has no value. A person would like to be a wealthy businessman, rather than a highly educated man. The desire is not for education. You will not like to be a educated genius so much as you would like to be wealthy businessman wielding power. Here is the essence of empirical thinking.
Behaviorist psychology says that the mind is an exudation of the body.
As fire is emanating from a match stick, to give an example, the mind is exuding from the body, so that the body is the source, the cause, and the mind is the effect. The effect cannot have so much importance as the cause. So, anything that satisfies the affirmation of the physical body, the ego included, what you call egoism, self-respect, are all names for the affirmation of the body, attracts. Physical affirmation includes acquiring wealth and also name and fame. All these are connected with the physical body only, and supersede any mental or intellectual activity under the wrong notion that the mind is an exudation of the body.