What year was the author of The Art of Thinking born?
Rolf Dobelli Rolf Dobelli (born July 15, 1966 in Luzern, Switzerland) is a Swiss author and businessman.
Frank Bowling Richard Sheridan Franklin Bowling {'1': ", '2': ", '3': ", '4': "} (born 29 February 1936), known as Frank Bowling, is a Guyana-born British artist who is widely considered to be one of the most distinguished artists to emerge from post-war British art schools. His paintings relate to Abstract expressionism, Color Field painting and Lyrical Abstraction.