Absolutely fantastic book! Covers evolution from the first RNA molecules all the way 'up' to human beings with the major evolutionary waypoints (RNA -> DNA -> first cells -> prokaryotes -> eukaryotes -> first pluricellular organisms -> 'visible' life: plants, animals -> brains -> becoming human -> cultural evolution) covered in sufficient detail to really learn something without getting too technical for the lay reader. Written by Nobel laureate De Duve, a cell biologist/biochemist who obviously knows what he's talking about. Aside from the biological facts and theories he also gives his personal view on life (origin, extraterrestrial, ...), science, religion and the future of humankind. Even though I don't agree with him on all points, his vision is clearly thoroughly contemplated, often wise and always thought provoking (got some serious inspiration for writing a sci-fi novel from reading this as well!).

Aside from the substance of the book, it is very well written and presented. Style is not too dry, conversational and informal, often quite humorous and always interesting. De Duve builds his story from the ground up, no prerequisite knowledge required. You only need a keen, open mind to really appreciate what he has to say.

All in all a must read for anyone interested in life, the universe (and the place of humankind in it) and everything.