Dedication

I need to thank all of my students. The words on these pages have been formed by years of their thoughtful and clever questions.

I would like to thank my better half, John. When I thought I’d run out of words, he assured me there were more.

I want to thank my dear daughters, Raina and Kenley, whose adherence to homework schedules inspired me to stick to my own.

And finally, to the cats, whose frequent walks across my keyboard kept things interessssssssssmku8jhewq3wwgggggggggggggg.