"A Crystal Age" is a futuristic novel by the British writer William Henry Hudson. Describing a world where people live in harmony with nature and one another, the author recreates the times when technology has not yet mastered the world. The plot of the book is based on the meeting of the main character with a civilization where there are no wars, crime and environmental pollution. "A Crystal Age" is a call for understanding and respect for the world around us, for nature and for other creatures that surround us. The whole world in this book is permeated with sophisticated metaphor and philosophical considerations about the essence of human existence.