“I am making way for youngsters.”

After winning the Central American and Caribbean Games gold medal after disputing the national team position http://www.elcaribe.com.do/2014/11/17/luis-pie-logra-oro-taekwondo-tiro-plato-tambien-brillo with the Olympic and regional multi medalist Gabriel Mercedes. (17 November 2014)

Source: Flowers for Algernon

Letter to Lucy Webb Hayes (14 August 1875)
Diary and Letters of Rutherford Birchard Hayes (1922 - 1926)
Context: My speaking is irregular. Sometimes quite good, sometimes not, but generally will do... I am too far along in experience and years both for this business. I do not go into [it] with the zest of old times. Races, baseball, and politics are for the youngsters.

Year unknown, published in 2001, The Quotable Walt Disney (2001)

1963, Deeds Rather Than Words (1963)

The Quotable Walt Disney (2001)
Context: To the youngsters of today, I say believe in the future, the world is getting better; there still is plenty of opportunity. Why, would you believe it, when I was a kid I thought it was already too late for me to make good at anything.

First post-engagement interview (2010)

Adolf Hitler c. 1933; as quoted in Hitler Speaks http://books.google.com/books?id=PndurCstDZMC&pg=PA251 (1939), by Hermann Rauschning, London: Thornton Butterworth, p. 247.
Misattributed
Source: Hitler's Letters and Notes
Context: I am beginning with the young. We older ones are used up. Yes, we are old already. We are rotten to the marrow. We have no unrestrained instincts left. We are cowardly and sentimental. We are bearing the burden of a humiliating past, and have in our blood the dull recollection of serfdom and servility. But my magnificent youngsters! Are there finer ones anywhere in the world? Look at these young men and boys! What material! With them, I can make a new world.