>>Can I safely assume you've read the works of Raymond Smullyan? If not, run out and get them.
>>
>>Tamar
>
>I have not.
>
>Tell me more. That sounds interesting.

Just try to find them in your nearest library. You certainly would enjoy them. I did about 5 years ago. M. Gardner is another name which comes to mind.

In Russian it would be Perelman...