[celoyd]

An obvious technical one: The Structure and Interpretation of Computer Programs. That might have saved me a lot of time to read in early adolescence. (Or maybe it was better to have to figure things out in my own half-assed way. Time travel is tricky.)

But something like Francis Bacon’s Essays might be more important. Seeing that lively and methodical a mind right at the horizon of easy readability would have been a powerful clue about how people think and how far afield it’s useful to look for interesting things.