It's quite simple. He proves by algebra that Hamlet's grandson is
Shakespeare's grandfather and that he himself is the ghost of his own
father.

--What? Haines said, beginning to point at Stephen. He himself?

Buck Mulligan slung his towel stolewise round his neck and, bending in
loose laughter, said to Stephen's ear:

--O, shade of Kinch the elder! Japhet in search of a father!

--We're always tired in the morning, Stephen said to Haines. And it is
rather long to tell.

Buck Mulligan, walking forward again, raised his hands.

--The sacred pint alone can unbind the tongue of Dedalus, he said.

--I mean to say, Haines explained to Stephen as they followed, this tower
and these cliffs here remind me somehow of Elsinore. THAT BEETLES O'ER
HIS BASE INTO THE SEA, ISN'T IT?

Buck Mulligan turned suddenly. for an instant towards Stephen but did not
speak. In the bright silent instant Stephen saw his own image in cheap
dusty mourning between their gay attires.

--It's a wonderful tale, Haines said, bringing them to halt again.

Eyes, pale as the sea the wind had freshened, paler, firm and prudent.
The seas' ruler, he gazed southward over the bay, empty save for the