"We are not here to have a good time."

The lady to whom I said the above replied, "Then what are we here for?" Her reply showed her cluelessness, so I said nothing more. An appropriate response would have been, "Indeed, but then why do people fill their waning days with idle talk and card games?"

Some people are built too close to the ground for serious conversation. 

To be a philosopher one must be a bit of a Luftmensch.