Pasar a limpio, Oscar Tusquets tells us, is not to rewrite or redraw, but to shape an idea or personal intuition in four sentences or in a sketch to make it understandable to others and share it. We learned to value the suburbs of American cities because Hopper los pasó a limpio, and to contemplate the beauty of the Gran Vía in Madrid thanks to the seven years that Antonio López spent observing and recreating it on the canvas. Pasar a limpio  thoughts is also possible and this is what the Barcelona designer, painter and architect does in this very personal and intelligent book: he raises some of the ideas that have accompanied him for a good part of his life, he records the questions that persist over the years and even frankly admits his philias and his phobias.