Wikiquote no longer allows unsourced quotations, and they are in process of being removed from our pages (see Wikiquote:Limits on quotations); but if you can provide a reliable, precise and verifiable source for any quote on this list please move it to Henry Adams. --Antiquary 19:30, 22 September 2009 (UTC)
- I have written too much history to have faith in it; and if anyone thinks I'm wrong, I am inclined to agree with him.
- It is impossible to underrate human intelligence— beginning with one's own.
- There is no such thing as an underestimate of average intelligence.