Perhaps, toward the last, I got a bit dotty.

I know that at the time I was confident, I had discovered the formula for squaring the circle; but I resolutely deferred the working of it out until after the examinations.

Then I would show them.
Came the several days of the examinations, during which time I scarcely closed my eyes in sleep, devoting every moment to cramming and reviewing.
And when I turned in my last examination paper I was in full possession of a splendid case of brain-fag.

I didn't want to see a book.

I didn't want to think or to lay eyes on anybody who was liable to think.
There was but one prescription for such a condition, and I gave it to myself--the adventure-path.