The Perfect Programming Language [pdf]

There's no perfect programming languages. This is why you need a language that you can morph yourself at will depending on the project and task at hand, without waiting for standard comitees or benevolent dictators, and then waiting for implementers, hoping that they'll get the new features right and compatible between them.

Hence you want Common Lisp! A modern homoiconic and metalinguistic programming language that you can (if you need to) change as needed to more easily solve your current programming tasks.