“faint heart never won fair lady”

Source: Don Quixote de la Mancha (1605–1615), Part II (1615), Book III, Ch. 10.

Det. Robert Goren in Law & Order: Criminal Intent.
Law & Order: Criminal Intent

"All for the Good: Why genetic engineering must soldier on" TIME magazine, Vol. 153, No. 1 (11 January 1999)
Context: Moving forward will not be for the faint of heart. But if the next century witnesses failure, let it be because our science is not yet up to the job, not because we don't have the courage to make less random the sometimes most unfair courses of human evolution.

Fragment 842.
Phædra

Speech to CWCC, London (April 2013)

"John Milton"
Brief Lives

Obama: I’m Just Like Lincoln http://nation.foxnews.com/president-obama/2011/08/16/obama-i-m-just-lincoln (16 August 2011)
2011

As quoted in Who was Ronald Reagan? (2004), by Joyce Milton, p. 85
Post-presidency (1989–2004)
Context: I know it's hard to understand, but sometimes painful things like this happen. It's all of the process of exploration and discovery. It's all part of taking a chance and expanding man's horizons. The future doesn't belong to the faint-hearted. It belongs to the brave.