“At one end of the intellectual spectrum are the wise, those who know they don't know much; and on the other end are the egotists, those who have little, if any, awareness of how little they know.”

The trial of Charles B. Reynolds for blasphemy (1887)

Scientists
The Note-Books of Samuel Butler (1912), Part XIV - Higgledy-Piggledy

Source: The Rainmaker

From an interview with Andrew Denton on Enough Rope screened 18th October 2004 on ABC Australia http://www.abc.net.au/tv/enoughrope/transcripts/s1219838.htm
Interviews

Gorgias

Speaking of the Massacre at Wounded Knee.
Black Elk Speaks (1961)
Context: I did not know then how much was ended. When I look back now from this high hill of my old age, I can still see the butchered women and children lying heaped and scattered all along the crooked gulch as plain as when I saw them with eyes still young. And I can see that something else died there in the bloody mud, and was buried in the blizzard. A people's dream died there. It was a beautiful dream.
And I, to whom so great a vision was given in my youth, — you see me now a pitiful old man who has done nothing, for the nation's hoop is broken and scattered. There is no center any longer, and the sacred tree is dead.

Source: The Optimist's Daughter