Quotes: Frank Wilczek

"If you don't make mistakes, you're not working on hard enough problems. And that's a big mistake." 

–– Frank Wilczek (b. 1951), American theoretical physicist and mathematician

via: Commonplace Book 2006-2009, 2009, p. 176. 

Quotes: W.H. Auden

"To ask the hard question is simple."

–– W.H. Auden (1907-1973), British-born American poet