So it's a conversation between Fermat and Schubert, at lunch:

Fermat: Schubert! How good to see you! I haven't seen in you in many weeks.

Schubert: Good to see you as well, Fermat! I have been working long hours on my latest composition. Once I complete this third movement, my masterpiece is complete. But enough about me, Fermat - Tell me how your research progresses.

Fermat: Wonderful, wonderful. My theorem will soon be proven!

Schubert: Good to hear, good to hear. So... are we still on for skydiving tomorrow?

Fermat: I wouldn't miss it for the world!