God created the cat... to allow human to caress the lion.

My friends Y. told me this story about R., a Spanish guy that they are currently accommodating  at the house of felicity (since Y. and E. have been living in it, guests have been moving in and moving out almost constantly). R. had been doing a PhD and  is due to pass its final viva in two weeks. R. came in the  department and tell to E.:

"I was at the house on the coach and the cat came close to me, so I started caressing it. And suddenly, it  started to make some strange noise and I though he was about to die. Do you think it can be serious?"

R., 27 and future PhD in science, is the only person  I have ever met that didn't know that cat purrs...