or natural pleasure, and the king at the least?

Certainly.

But if so, the tyrant will live most unpleasantly, and the king most pleasantly?

Inevitably.

Would you know the measure of the interval which separates them?

Will you tell me?

There appear to be three pleasures, one genuine and two spurious: now the transgression of the tyrant reaches a point beyond the spurious; he has run away from the region of law and reason, and taken up his abode with certain slave pleasures which are his satellites, and the measure of his inferiority can only be expressed in a figure.

How do you mean?