Classic books contain timeless wisdom. Much has already been said, and it has often been expressed comprehensively and insightfully. Yet, the language in old books often belongs to another era: outdated phrases, long-winded sentences, and difficult vocabulary. Our book summaries rework important classics in modern, clear writing. The goal is to preserve old knowledge, bring it back to the public, make it practical, and help people think more clearly, act more wisely, and understand themselves better. The audiobooks can be enjoyed while commuting, doing chores, or exercising, turning everyday time into lasting insight.