His life and mathematics in interpolation theory and inequalities will be presented. Special attention will be taken to our long cooperation (23 years) and joint results. Let me mention here 2 books written jointly: 1. L. Larsson, L. Maligranda, J. E. Peˇcari´c and L. E. Persson, Multiplicative Inequalities of Carlson Type and Interpolation, World Scientific, Singapore 2006, xiv+201 pp. (ISBN: 981-256-708-9).2. A. Kufner, L. Maligranda and L. E. Persson, The Hardy inequality - About its History and Some Related Results, Vydavatelski Servis Publishing House, Pilsen 2007, 162 pp. (ISBN: 978-80-86843-15-5).MR2351524 (2008j:26001) (Reviewer: B. Muckenhoupt).Of course, description about his life with many photos, some sories and jokes will be included.