“If you don't believe in the innate unreasonableness of human beings, just try raising children.”
1980s–1990s, Barbarians inside the Gates and Other Controversial Essays (1999)
Help us to complete the source, original and additional information
Thomas Sowell 101
American economist, social theorist, political philosopher … 1930Related quotes

Source: 2000s, Letter to a Christian Nation (2006), p. 80

"Ending Hunger Now" TED Talk (July 2011) http://www.ted.com/talks/josette_sheeran_ending_hunger_now.html
Context: I believe we're living at a time in human history where it's just simply unacceptable that children wake up and don't know where to find a cup of food. Not only that, transforming hunger is an opportunity, but I think we have to change our mindsets. I am so honored to be here with some of the world's top innovators and thinkers. And I would like you to join with all of humanity to draw a line in the sand and say, "No more. No more are we going to accept this." And we want to tell our grandchildren that there was a terrible time in history where up to a third of the children had brains and bodies that were stunted, but that exists no more.

Observation made privately, quoted by Time journalist Michael Kramer, The Case for Skepticism http://www.time.com/time/magazine/article/0,9171,956604,00.html Time, (26 December 1988), in the context of doubts about PLO sincerity in hinting about recognition of Israel.
1980s

Source: Awaken the Giant Within (1992), p. 511
Context: Live life fully while you're here. Experience everything. Take care of yourself and your friends. Have fun, be crazy, be weird. Go out and screw up! You're going to anyway, so you might as well enjoy the process. Take the opportunity to learn from your mistakes: find the cause of your problem and eliminate it. Don't try to be perfect; just be an excellent example of being human.

“If you bungle raising your children I don't think whatever else you do well matters very much.”
Interview with NBC News Correspondent Sander Vanocur (1 October 1960) https://web.archive.org/web/20140127091759/http://www.jfklink.com/speeches/joint/joint011060_nbctv03.html

On his version of James Bond, reported in Edward Gross, His Name was Bond, James Bond: Timothy Dalton on the World of 007 http://web.archive.org/20000304095759/www.geocities.com/Hollywood/Film/7518/Bond_Eng/Bond_Eng.htm.