Hand‑Orakel und Kunst der Weltklugheit (original Spanish: Oráculo manual y arte de prudencia) is a 17th‑century “manual” of worldly wisdom — a collection of short, pithy maxims and reflections about how to live wisely, deal with people, and navigate life’s challenges. reclam.de +2 exlibris.ch +2 Gracián was a Spanish Jesuit and moralist; his work has been widely recognized as one of the most important classical guides to prudence, prudently balancing moral insight, realism, and a certain dose of realism about human nature.