Conspicuously absent: "you can scarcely imagine how expensive our text books are. Having tried to save some money through the purchase of a second-hand editio

Conspicuously absent: "you can scarcely imagine how expensive our text books are. Having tried to save some money through the purchase of a second-hand edition of Euclid's Elements, I am at risk of failing that class. The only change is that for this year's edition for some reason all the postulates have been renumbered, making it impossible for me to use the text in class."