I didn't even know there was an Ideas show before Lister Sinclair until the last few years. Whenever I tuned in, he was always the voice of the CBC Radio show that was willing to examine thinkers and their thoughts in detail.
What I liked best about him was his willingness to share his interest in a topic without presenting himself as smarter or better-read than his listeners. (Which is different from playing dumb.)
Ideas will play a tribute to him over the next three nights. 9 p.m. on CBC Radio One. I'll try to catch it. I want to hear if they play some tape from his earlier days as a playwright and actor.