SBF writes:
He spent his time and energy spreading a message of peace and hope for humanity from the Bible as he understood it
That's just it, he didn't have any understanding because he had no training and just started calling himself a "Pastor" without having been given that name by anyone.
For instance:
The bible says that "money is the answer for everything" . Sound doctrine doesn't not allow for this teaching because those trained in ministry know that the book of Ecclesiastes is a philosophical book written from a carnal point of view.... the one we are not supposed to have as a total worldview. It says that it's material from a point of view "under the sun" dozens of times so that the reader won't get the wrong idea.
Yet, Russel picked out a verse in that book that says :
the dead do not know anything, nor do they have a reward any longer, for their memory is forgotten. 6 Indeed their love, their hate, and their zeal have already perished, and they will no longer have a share in all that is done under the sun.
This verse is talking about the carnal life of man, under the sun, in this world...ie. a man's body. Then, he takes this ignorant exegesis and forms a Christian doctrine out of it while ignoring perhaps a dozen or more NT scriptures that say the opposite. Millions of JW's still repeat this non-sense in trying to support the heretical doctrine of annihilation.
SBF - Here's a link to the second booklet (1912 publishing date). Scrolling down on each of the links gives several more works.