[Doctor Stochastic]

A banana is a banana because it has the necessary qualities of "banananess," and a cow is a cow because she has the necessary qualities of "cowness." Everything has its necessary qualities, humans, mountains, dogs, and books, the necessary qualities of which we call humanness, mountainness, dogness, and bookness.

This seems wrong, humanness, mountainness, dogness, and bookness would more accurately be called classifications given by people to these objects. None of them are qualities or properties of an object. Were these really properties, there would be distinct classifications of for mountainness, hillness, mesaness, butteness, molehillness, etc. (Dogness, wolfness, coyoteness, etc.; bookness, codexness, scrollness, pamphletness, etc.)

[Publius]

Spoken like a true object-oriented programmer.

[Hank Kerchief]

None of them are qualities or properties of an object.

That's correct.

Hank