My buddy believes that John Owen is the greatest of the post-apostolic theologians. Well, I am sure he would get some debate on that issue, but when you read quotes like these, you understand why he is convinced of Owen's lofty rank.
Sin is never less quiet than when it seems to be most quiet, and its waters are for the most part deep, when they are still. - John Owen
While the best a non-Christian can do is sin, the worst a Christian can do is sin. - John Owen