What would a book on another man's doubts do for you, Except alleviate his doubts for you? If you have doubts take them to God for yourself, and do not look to the doubts of others to silence your own. Because what will happen when you doubt beyond what the other man has, what tool will you have to silence that doubt?
We must learn to turn to God/Holy Spirit when we have doubts and allow Him to resolve these things in our lives.