“Fifteen thousand years ago, my prowess as a hunter of woolly mammoths would probably have accorded me more status in the culture than my ability to handle the kinds of abstract mathematical concepts involved, for example, in twelfth grade differential calculus. I need to see: one is not inherently more valuable than another; I am not inherently worth more or less dependent on these abilities. If I can see this, I open a door to a more natural sense of self-worth, and to a degree of freedom.”
