More quotes by Hans Freudenthal
Horizontal mathematising leads from the world of life to the world of symbols.
Angles are measured by arcs, such that 360° and 2π correspond to each other.
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Be not afraid of life. Believe that life is worth living, and your belief will help create the fact.
Attribution
Quote text and notes from Wikiquote: Hans Freudenthal (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.