An excerpt from chapter 5 on Reason from Objectivism: The Philosophy of Ayn Rand by Leonard Peikoff.
Let us begin by defining the nature of emotions and their relationship to ideas. What is the connection between feeling and thinking?
A feeling or emotion is a response to an object one perceives (or imagines), such as a man, an animal, an event. The object by itself, however, has no power to invoke a feeling in the observer. It can do so only if he supplies two intellectual elements, which are necessary conditions of any emotion.
First, the person must know …
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