It is filled with the most beautiful problems, Dick, questions which will take many a good man a whole night to solve.

When I think of the joyous hours I've spent over it some of the tenderest chords in my nature are touched." Pennington uttered a deep groan and buried his face in the grass.

Then he raised it again and said mournfully: "Let's make a solemn agreement, Dick, to watch over our poor comrade.
I always knew that something was wrong with his mind, although he means well, and his heart is in the right place.

As for me, as soon as I finished my algebra I sold it, and took a solemn oath never to look inside one again.

That I call the finest proof of sanity anybody could give.