As we enjoy great advantages from the inventions of others, we should be glad of an opportunity to serve others by any invention of ours, and this we should do freely and generously.

I have no private interest in the reception of my inventions by the world, having never made, nor proposed to make, the least profit by any of them.

If you would have a faithful servant, and one that you like, serve yourself

Opportunity is the great Bawd.

Human felicity is produced not as much by great pieces of good fortune that seldom happen as by little advantages that occur every day.

Were it offered to my choice, I should have no objection to a repetition of the same life from its beginning, only asking the advantages authors have in a second edition to correct some faults in the first