The Agnostic Atheist Anti-Theist Foundation on Facebook have been putting up a lot of great videos on YouTube lately, compiling the best speeches and sound bites from prominent atheists.
Below is just their latest one featuring Christopher Hitchens (part 7 in the series, natch):

And here’s one with Ayaan Hirsi Ali:
Of course, with atheists like these, it’s hard to find unquotable material…
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