রোল্‌ফ ডোবেল্লি

Rolf Dobelli (born July 15, 1966 in Luzern, Switzerland[1]) is a Swiss author and businessman. He began his writing career as a novelist in 2002, but he is best known internationally for his bestselling non-fiction The Art of Thinking Clearly (2011, English 20... আরো দেখুন