Faraday to Sarah Barnard   c late February 1821¹

I tied up the enclose key with my books last night, and make haste to return it lest its absence should occasion confusion. If it has, it will perhaps remind you of the disorder I must be in here also for the want of a key - I mean the one to my heart. However, I know where my key is, and hope soon to have it here, and then the Institution will be all right again. Let no one oppose my gaining possession it when unavoidable obstacles are removed.

Ever, my dear girl, one who is perfectly yours, | M. Faraday