From President Obama’s political rhetoric to the bursting of the housing bubble, from conversations to commercials, James Geary shows that every aspect of our day-to-day experience is molded by metaphor. Geary takes readers from Aristotle’s investigation of metaphor right up to the latest neuroscientific insights into how metaphor works in the brain. Witty, persuasive, and original, I Is an Other explores metaphor’s effects on financial decision making, effective advertising, leadership, learning, and more. Romeo’s exclamation “It is the East, and Juliet is the sun!” may be one of the most well-known metaphors in literature, but metaphor is more than a device of love-struck poets. As Geary demonstrates, metaphor has leaped off the page and landed with a mighty splash right in the middle of the stream of consciousness.