The Artful Angler, or The Leisure of the Observer.

In terms of the number of reprints, this book ranks third in the English-speaking world after the Bible and Shakespeare's plays. "The Artful Angler" is a whimsical combination of practical fishing advice, poetry, anecdotes, and a sermon in praise of a virtuous and peaceful life in nature, which the author contrasts with the bloody revolutions and civil wars that tormented England in the 17th century.