GSAS Dean Xiao-Li Meng
The following wise advice deserves to be widely distributed:
Letter to Undergraduate Students, The Harvard Undergraduate Research Journal v. 8 (2015) n. 1, p. 3.
Some more details appear in:
Rejection Pursuit, X-L Files, Institute of Mathematical Statistics Bulletin v. 42 (2013) n. 6, pp. 4-5.
The Bureau of Study Council at Harvard has created a short video on this:
as well as a book containing an essay:
A (Hopefully) Well-accepted Statistical Theory of Rejection, Reflection on Rejections, ed. Abigail Lipson, 2013, pp. 33-34.