certain schools of mahayana philosophy seem very well-suited to our times, especially through an emphasis on mappo and skillful means. how much of those ideas really came from the Buddha of the Pali Cannon, I have no idea. I do like this quote, from the last speach of the Buddha before his death:

I have preached the truth without making any distinction between exoteric and esoteric doctrine: for in respect of the truths, Ānanda, the Tathāgata has no such thing as the closed fist of a teacher, who keeps some things back.