Never Split the Difference teaches that negotiation is not about logic and rationality, but about emotional intelligence, empathy, and the subtle art of getting into your counterpart's head to uncover their real motivations and desires.

Influence is the quintessential guide to the six universal principles of persuasion - reciprocation, commitment and consistency, social proof, authority, liking, and scarcity - that shape our decisions and behavior, often without our conscious awareness.