Susan says, don't get afraid, get angry. - Terry Pratchett

'What would Deftmenes be if we went around obeying orders all the time?'
'They might be ruling the Carpet,' said Pismire.
'Ha!' said Brocando, 'but the trouble about obeying orders is, it becomes a habit. And then everything depends on who's giving the orders.'

Cats will amusingly tolerate humans only until someone comes up with a tin opener that can be operated with a paw.

It's still magic even if you know how it's done.