Abstract
Wayne A. Davis uses his theory of happiness to clarify and deepen Rand's theory of emotion. He distinguishes belief from knowledge, volitive from appetitive desire, and occurrent thinking from believing. He suggests that values in Rand's sense are things we volitively desire. Happiness is defined in terms of the sum of the products of the degree of belief and desire functions over all thoughts. Davis then evaluates such Randian maxims as that happiness cannot be achieved by the pursuit of irrational whims, and that emotions are not tools of cognition, but products of one's premises—one's philosophy