David Lee Roth is one of rock’s greatest frontman and, overall, one of music’s most unique characters.

When he’s on stage, he’s the ultimate showman. When he’s off stage and talking with the press, he walks a line between brilliant and insane. One minute he takes off on a stream of consciousness that convinces you he’s not all there, and then he’ll throw out a surprising one-liner that’ll make you think, “Holy s—…Diamond Dave’s has been smarter than all of us this whole time.”

DLR recently announced he's retiring from the stage following his upcoming Las Vegas residency at the House of Blues at Mandalay Bay that takes place New Year’s Eve, New Year’s Day, Jan. 5 and Jan. 7-8. Whatever he decides to do next, it likely won’t be dull. But before we bid him “Happy Trails,” let’s wish a happy birthday this October 10 to the one, the only David Lee Roth by looking back at these 10 quotes attributed to him.