So many things unknown -- The outsider -- The desire to know is natural -- Nothing but full privies -- Lying on a feather mattress -- The Universe stands open -- Citizen of the world -- The fabulous notebooks -- The fabulous notebooks, part 2 -- I have wasted my hours -- I will continue -- What happened next? -- Leonardo's notebooks and where they are now.

So many things unknown! -- The outsider -- The desire to know is natural -- Nothing but full privies -- Lying on a feather mattress -- The universe stands open -- Citizen of the world -- The fabulous notebooks -- The notebooks, part 2 -- "I have wasted my hours" -- I will continue -- What happened next? -- Leonardo's notebooks and where they are now.