"It's vulgar to enjoy that kind of thing."

Dante is engrossed watching a quarrel between Adam of Brescia and Simon of Troy and earns a rebuke from Virgil ("the master").

I was all agog and listening eagerly,
   When the master said said: "Yes, feast thine eyes; go on;
   A little more, and I shall quarrel with thee."

And when I heard him use that angry tone
  To me, I turned to him so on fire with shame,
  It comes over me still, though all these years have flown.

And like a man who dreams a dreadful dream,
  And dreams he would it were a dream indeed,
  Longing for that which is, with eager aim

As though 'twere not; so I, speechless to plead
  For pardon, pleaded all the while with him
  By my distress, and did not know I did.

"Less shame would wash away a greater crime
  Than thine has been"; so said my gentle guide;
  "Think no more of it, but another time,

Imagine I'm still standing at thy side
  Whenever Fortune, in thy wayfaring,
  Brings thee where people wrangle thus and chide;

It's vulgar to enjoy that kind of thing."

- Inferno, Canto XXX