As I was reading the book, I thought it would fall under a 3-star rating. However, the second lecture was far superior to the first, which bumped it up to a 4-star rating.
The first lecture, "Christ All in All," was a lecture to the faculty to keep their eyes on Christ in their studies and teachings. If you are not new to Reformed works, then this will add little to your growth, but it will show you the warmness and Christ-centeredness of William S. Plumer, and that should be emulated in all of us.
The second lecture, "The Right Temper for a Theologian," takes the cake as far as providing value for the reader. His descriptions of godly character for theologians (careful of the power of prejudice, modesty, independence of thought and freedom of inquiry, profound reverence, a love of truth, patience, a spirit of diligence, genuine lively faith, just moderation, the duty of prayer, practice, an evangelical temper) are much needed for the theologians and leaders in the Church today.