activity were extraordinarily low, as if a higher striving had raised him above the common animal need of mankind. It may be open to doubt whether he ever sought direct sexual gratification, and in what manner, or whether he could dispense with it altogether. We are justified, however, to look also in him for those emotional streams which imperatively force others to the sexual act, for we cannot imagine a human psychic life in whose development the sexual desire in the broadest sense, the libido, has not had its share, whether the latter has withdrawn itself far from the original aim or whether it was detained from being put into execution.
Anything but traces of unchanged sexual desire we need not expect in Leonardo. These point however to one direction and allow us to count him among homosexuals. It has always been emphasized that he took as his pupils only strikingly handsome boys and youths. He was kind and considerate towards them, he cared for them and nursed them himself when they were ill, just like a mother nurses her children, as his own mother might have cared for
