Leonardo's on the Penis

In a section of his notebooks called On the Penis, he described quite humorously how the penis had a mind of its own and acted at times without the will of a man. He found it curious that the penis was often a source of shame and that men were shy about discussing it. This is another direct quote from Leonardo. Man is wrong to be ashamed of giving its name or showing it,. always covering and concealing something that deserves to be adorned with ceremony.