Knowledge has always been difficult for humanity. The history of science has had it all - dramatic and sometimes tragic episodes side by side with funny, amusing moments. And among scientists we see a variety of characters. Good and evil, cunning and selfless, envious and ambitious, geniuses and talented amateurs, they all contributed to the knowledge of the world in which we live. Walter Gratzer talks about the great discoveries and people of science honestly and objectively, but at the same time it is clear: he loves his heroes very much and writes about them with great sympathy. These short stories contain a lot of humor and knowledge of human nature, and therefore they are interesting to everyone - both people far from science and those who have connected their lives with it.