I have the happiness to be lodged with a Gentleman who is justly esteemed by all his Brethren, who has extensive practice both as a Physician & Surge… - Joseph Black

These, sir, are the chief of the reasons which have been urged to me for staying here some time longer & which I thought so good that I determined to acquaint you with them & in the meanwhile [I] will employ my time to the best advantage till I have your opinion of them.
I am D^r Sir Your most affec^te & Dutyfull Son,

If I go to London to acquire this part of medicine, I may see a good deal of Practice, but I am a stranger there, & have no acquaintance whom I can venture to trust so much or be so familiar with as to trouble him with all my questions and doubts.—On the contrary here, medicine is allowed on all hands to be in a very flourishing condition. It is practised in the most rational & simple manner.

Others in the pursuits after happiness or pleasure must commonly seek those sources of it which they cannot enjoy without some inconvenience to the rest of their fellow creatures; hence they have their imaginary happiness so much soured by Envy, Jealousy, or self-disapprobation that they find themselves dissappointed.