Lisp certainly includes certain 'timeless' aspects, such as lambdas and homoiconicity, but other features (like conses everywhere, IMO) are simply implementation details of the time Lisp was first created.
I'm concerned that Lisp advocates, by repeatedly saying that Lisp is the final step in language design, the ultimate language,...etc might distract some from looking for additional, newer, insightful concepts in computation and language design.