Leonardo da Vinci: Study with desire!
Study without desire spoils the memory, and it retains nothing that it takes in.
Leonardo di ser Piero da Vinci (Vinci, Italy, April 15, 1452 - Amboise, France, May 2, 1519, Old Style) was an Italian Renaissance polymath: painter, sculptor, architect, musician, mathematician, engineer, inventor, anatomist, geologist, cartographer, botanist, and writer. His genius, perhaps more than that of any other figure, epitomized the Renaissance humanist ideal. Leonardo has often been described as the archetype of the Renaissance Man, a man of "unquenchable curiosity" and "feverishly inventive imagination".