A famous professor of surgery died and went to heaven. At the pearly gate he was asked by the gatekeeper: 'Have you ever committed a sin you truly regret?'

'Yes,' the professor answered. 'When I was a young candidate at the hospital of Saint Lucas, we played soccer against at team from the Community Hospital, and I scored a goal, which was off-side. But the referee did not see it so, and the goal won us the match. I regret that now.'

'Well,' said the gatekeeper. 'That is a very minor sin. You may enter.'

'Thank you very much, Saint Peter,' the professor answered.

'I am not Saint Peter,' said the gatekeeper. 'He is having his lunchbreak. I am Saint Lucas.'