Comment by unz

Lisp is a dangerous language that shouldn't be taught or used these days. There are plenty of superior programming techniques.

Mathematical programming - linear programming, finite domain constraint programming, constraint logic programming, logic programming, relational programming

Static functional programming - ml, haskell

A good modern introduction to programming is Concepts, Techniques, and Models of Computer Programming, by Peter Van Roy and Saif Haridi. It's far superior to the commonly mentioned lisp book Structure and Interpretation of Computer Programs.