Leonardo, like his contemporary Christopher Columbus, possessed an insatiable curiosity and desire for discovery of unknown worlds. Only observation, says many times Leonardo, is the key to knowledge and understanding. Throughout his life Leonardo seeks to understand and control the nature. He constructed machines and original installations, built bridges, dissected human bodies and trying to break into the Providence of God. He could be called "Master of everything", everything that exists in the Universe, for his art and his inventions. Leonardo can be called the Son of God.