I still have my father’s MIR books and they seemed to me really practical and pragmatic. Especially the Smirnov (iirc) ones about differential calculus, where

I still have my father’s MIR books and they seemed to me really practical and pragmatic. Especially the Smirnov (iirc) ones about differential calculus, where he introduces it with a physics quantification problem. You could then imagine objects moving around... etc. Later on he introduces the formal definitions... informally (like “we discussed this and that, let’s call this concept <concept> and if you think about it if <assumption> then <theorem>“). It’s like a piece of literature or a correspondance. Compared to that, Bourbakis feel like being lost in a desert without anything to drink nor eat but dry biscuits.