For those like me who prefer slides:<p><a href="http:&#x2F;&#x2F;www.pvv.org&#x2F;~oma&#x2F;HistoryAndSpirit_NDC_Jun2015.pdf" rel="nofollow">http:&#x2F;&#x2F;www.pvv.org&#x2F;~oma&#x2F;HistoryAndSpirit_NDC_Jun2015.pdf</a><p>They are good!