[1] https://ncatlab.org/nlab/show/William%20Lawvere#RelationToPh...
[2] http://philosophy.stackexchange.com/questions/9768/have-prof...
[1] https://ncatlab.org/nlab/show/William%20Lawvere#RelationToPh...
[2] http://philosophy.stackexchange.com/questions/9768/have-prof...