“The works of the great writers of the past are very beautiful even from without. And yet their visible beauty is sheer ugliness, compared with the beauty of those hidden treasures which disclose themselves only after very long, never easy, but always pleasant work. This always difficult but always pleasant work is, I believe, what the philosophers had in mind when they recommended education. Education, they felt, is the only answer to the always pressing question, to the political question par excellence, of how to reconcile order which is not oppression with freedom which is not license.”

The Use of Life (1894), ch. VI: National Education
Source: The Use of Life http://archive.org/details/uselife02lubbgoog/page/n114/mode/2up on Archive.Org, pages 102—103

Misattributed
Source: Hermann Weyl as quoted by Freeman Dyson: "Characteristic of Weyl was an aesthetic sense which dominated his thinking on all subjects. He once said to me, half-joking, 'My work always tried to unite the true with the beautiful; but when I had to choose one or the other, I usually chose the beautiful.'" - Freeman Dyson, "Obituary of Hermann Weyl," Nature (1956-03-10), pp. 457-458.

Vanity Fair: "Jonathan Ives Shares Three Lessons He Learned From Steve Jobs" https://www.vanityfair.com/news/tech/2014/10/jony-ive-lessons-from-steve-jobs (9 October 2014)

Hercule Poirot
Source: The Murder of Roger Ackroyd (1926)
Context: Understand this, I mean to arrive at the truth. The truth, however ugly in itself, is always curious and beautiful to seekers after it.

"Her Greatest Admirer" in TIME (2004)

Attributed in Lewis Copeland, Best Quotations for All Occasions (1965), p. 19
Attributed

Written in the 1920s, as quoted in The Ghost in the Little House, ch. 8, by William V. Holtz (1993).

'Poetry' September 1995