NPR handpicked over 300 commencement speeches from 1774 onward. Going to the site lists the speakers by alphabetical order by first name (an odd choice if you ask me). Where there is video, they include a link to it and you can search by speaker, school, and year; clicking on a theme filters and YOLO is one of them — the oldest of those going back to 1975.
Some links only have partial transcripts but the quotes NPR has pulled from them are great words of advice and inspiration.
via Kottke