Dror Bar-Natan: Talks: UofT-GS-050113:

Some Famous Self-References

  1. If God is almighty, can she make a stone so heavy even she can't lift it?

  2. Who am I? What am I? Why am I here?

  3. Which question is also its own answer?

  4. This statement is false.

  5. Russell's paradox: The set of all sets which aren't elements of themselves.

  6. Some examples for self-reference are available here.

  7. Some further examples for self-reference are available here.