This is more related to a mindset than a list of features. By the way, "modern" and "new" have different meanings[0]. Even if a good deal of features from Lisp

This is more related to a mindset than a list of features. By the way, "modern" and "new" have different meanings[0]. Even if a good deal of features from Lisp are incorporated in newer languages, what makes Lisp interesting is how everything is designed to bring a cohesive dynamic environment. Trace, debug, macroexpand, change the readtable, change the pretty-printer, change evaluation rules, types, conditions and restarts, special variables, around/before/after CLOS methods, the MOP, etc. all those little things contribute in making programs that can evolve, not in a hacky way but as part of the language philosophy. I also like the idea that programs should strive to be correct first and fast second, while effectively providing ways to profile and optimize code, tune or deactivate the GC, etc. [0] I switched from Python to Lisp because I wanted a modern language (http://tapoueh.org/confs/2014/05/05-ELS-2014 http://tapoueh.org/confs/2014/05/05-ELS-2014)