I recently picked up the (presumably) final collection of Isaac Asimov's Black Widowers Tales, The Return of the Black Widowers. There are some great stories in here including:

• The Acquisitive Chuckle
• The Obvious Factor
• Northwestward
• The Haunted Cabin

In the latter (originally published in 1990) I was amused to find this section:

The five other Widowers at the table, rationalists all, scrambled to their feet and, the order for silence forgotten, yammer their indignation. DaRienzi kept his seat and smiled.

Avalon raised his hands and thundered, "Silence! I don't say I accepted the supernatural is an explanation. I merely say I was forced to consider it. I don't believe in supernatural influences, but even my own firmest beliefs cannot be accepted by myself as unshakable and invulnerable. Do you mind pursuing rationality thus far?"