. . . . . . "Die fr\u00F6hliche Wissenschaft"@en . . "The Gay Science (German: Die fr\u00F6hliche Wissenschaft, literally \"The Joyful Science\") is a book by Friedrich Nietzsche, first published in 1882 and followed by a second edition, which was published after the completion of Thus Spoke Zarathustra and Beyond Good and Evil, in 1887. This substantial expansion includes a fifth book and an appendix of songs. It was noted by Nietzsche to be \"the most personal of all [his] books\", and contains the greatest number of poems in any of his published works."@en . "The Gay Science"@en . .