17. Fruits of Solitude - William Penn

Delivered as a series of somewhat preachy, but overall, sincerely edifying platitudes, Penn presents many ideas, which meditated upon, must almost definitely lead to a deep wisdom and understanding of human nature and it's condition.

16. Journal - John Woolman

The most spiritual account of anyone's thoughts or actions I think I've ever read. Woolman's unremitting and unrelenting desire to do what he believes is "God's work" is very impressive, to say the least. His fundamental contribution in raising awareness as to the inhumanity of the slave trade in the early 18th century in America is beautiful and uplifting.

15. His Autobiography - Benjamin Franklin

Inspirational, but preachy towards the end. Too self-aggrandising in places. Very interesting history, and sketch of the mid 18th century as well as something like a guidebook to social success.