Robert Southey to Joseph Cottle, February 1796, 'Count Leopold Berchtold. - this man (foster-brother of the Emperor Joseph) is one of those rare travellers characters who spend their lives in doing good. it is his custom in every country he visits to publish books in its language on some use subject of practical utility — these he gave away. I have now lying before me the two which he printed in Lisbon. the one is an Essay on the means of preserving life in the various dangers to which men are daily exposed. the other — an Essay on extending the limits of benevolence not only towards men but animals. his age was about 25 — his person fine, & his manners the most polished....'