This is a survey of the whole of mathematics, at the undergraduate level, which attempts to give the "big picture". If you read and understand it, you will have a better grasp of this big picture than most graduate students. MacLane has written a book which every mathematician (and perhaps philosopher) should read and savour.

There are few technical details in this book. It is not a textbook per se, but a beautiful exposition of mathematics as a whole. It is not for learning any specific topic from; rather it is about appreciating the structure of mathematics as a whole, so that you know how each specific topic stands within that structure.

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