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1 " It's where we're nearest to our humanness. Useless knowledge for its own sake. Useful knowledge is good, too, but it's for the faint-hearted, an elaboration of the real thing, which is only to shine some light, it doesn't matter where on what, it's the light itself, against the darkness, it's what's left of God's purpose when you take away God. "
― , The Invention of Love
2 " Academic pedigree alone is no guarantor of useful knowledge and wisdom. "
3 " The spiritual world of a Volk is not its cultural superstructure, just as little as it is its arsenal of useful knowledge [Kenntnisse] and values; rather, it is the power that comes from preserving at the most profound level the forces that are rooted in the soil and blood of a Volk, the power to arouse most inwardly and to shake most extensively the Volk's existence. "
― Martin Heidegger , La autoafirmacion de la universidad alemana & El Rectorado, 1933-1934 & Entrevista del Spiegel
4 " Provided that nothing like useful knowledge could be gained from them, provided they were all story and no reflection, she had never any objection to books at all. "
― Jane Austen , Northanger Abbey
5 " To make a man happy fill his hands with work his heart with affection his mind with purpose his memory with useful knowledge his future with hope and his stomach with food. "
6 " Signals always point to something. In this sense, a signal is not a thing but a relationship. Data becomes useful knowledge of something that matters when it builds a bridge between a question and an answer. This connection is the signal. "
― , Signal: Understanding What Matters in a World of Noise