Edward Payson, on Evangelism, and a free Ebook of Sermons

The 9 Marks Blog has a great and brief article about evangelism with an extended quote from Edward Payson a congregationalist pastor from the early 1800's in Massachusetts.
We all deserve damnation, a thousand times, for our stupid insensibility to the situation of those, who are perishing around us. We profess to believe the word of God; but can you prove that you believe it? Do you act, as if you believed it? Do you believe that many of your acquaintances, your children, are in danger of the fate, which has been so vividly described in the bible?
This was enough to make me interested in the guy (I've not previously heard of him). And since his writing is old enough, it is available in the public domain. Google Books will allow you to download an EPUB file (convertible to Kindle format, or readable in Stanza on your iPhone). I've downloaded this book of his sermons.