(Lights up. A and B are standing

across from each other

in an empty room.)

A:

I think, therefore I am.

B:

Who said that?

A:

Descartes.

B:

No, I mean who said that. Who's there?

A:

Oh, it's me.

B:

I don't know that.

A:

Don't you?

B:

No.

A:

Do you believe I'm here?

B:

Yes.

A:

So it's true?

B:

I believe it to be true.

A:

Close, but can you justify it?

B:

I hear you.

A:

Can you trust your senses?

B:

I... I don't know.

A:

No?

B:

I can't be sure.

A:

You doubt?

B:

I think...

A:

You think!

B:

Yes.

A:

Yes...

B:

I think... therefore, I am.

A:

Yes.

(Lights out.)