In the course of our life we laugh and cry too many times to count. But what even are laughing and crying? Where do they come from, and what are they good for? When do we laugh, and what makes us cry? This book has the answers, and these answers may surprise you!

• Empowerment and growth: the book shows that all emotions are equally important and we need them all.
• Simple concepts: The book introduces the fundamental concepts of light and darkness / laughter and crying.