As you are expected (God willing) to arrive in London soon, Baron von Leibniz is eager to correspond with you. I have made private arrangements for letters to be conveyed between Hanover and London by couriers who may be trusted. At the risk of being presumptuous, I have offered the Doctor (as I affectionately call him, even though he has been ennobled) the use of this service. My seal on this envelope is my affirmation that the enclosed letter came from the Doctor’s hand to yours, untouched and unseen by any other person.