According to this Reddit post (https://www.reddit.com/r/Anarcho_Capitalism/comments/dlh9w/the_delusion_of_good_government_great_speech_by/), you'll find it in this speech video: http://www.youtube.com/v/064YTtSxVSo?fs=1&hl
I only skimmed it (it's 52 minutes long and I'm on a mobile) but here ya go :)
(here's an archive.org snapshot of where the Reddit link points to: https://web.archive.org/web/20101006151842/http://theuklibertarian.com/2010/10/01/the-delusion-of-good-government-thomas-e-woods/ )