OK, this is really fascinating! I thought Boswell's description of Voltaire's religious beliefs was very interesting (I guess I'd always thought he was an atheist) and rather in-character, really.

VOLTAIRE: Yes. You have a noble desire to be King of Europe. You say, 'I wish it, and I ask your protection in continuing to wish it.' But it is not probable.

Like felis says, this is the best line :D