Neither human nature nor human personality can be independent of culture. Human beings share certain social norms or rules within their cultural groups. Over 2000 years ago, Aristotle held that man is by nature a social animal. Similarly, Xun Kuang (298-238BC), a Chinese philosopher, pointed out that humans in social groups can not function without shared guidance or rules. Therefore, each culture or cultural group estabishes its own norms. This book is designed to provide readers with a perspective of how people are different from, and similar to, each other - both within and across cultures. One of this volume's goals is to make the book a practical guide for people preparing to interact with those whose cultural background is different from their own.