“Life, through experiences, difficulties and disappointments forces to grow, overcome obstacles and become stronger.”

The Education of Henry Adams (1907)

Source: Radical Grace: Daily Meditations by Richard Rohr

Quotes, Concession speech (2000)
Context: I know that many of my supporters are disappointed. I am too. But our disappointment must be overcome by our love of country.
And I say to our fellow members of the world community, let no one see this contest as a sign of American weakness. The strength of American democracy is shown most clearly through the difficulties it can overcome.

In his letter to Theo, The Hague, 11 March 1883, http://www.webexhibits.org/vangogh/letter/12/274.htm?qp=art.material,as translated by Johanna van Gogh-Bonger, edited by Robert Harrison, in The Complete Letters of Vincent van Gogh (1991)
1880s, 1883
Context: It constantly remains a source of disappointment to me that my drawings are not yet what I want them to be. The difficulties are indeed numerous and great, and cannot be overcome at once. To make progress is a kind of miner’s work; it doesn’t advance as quickly as one would like, and as others also expect, but as one stands before such a task, the basic necessities are patience and faithfulness. In fact, I do not think much about the difficulties, because if one thought of them too much one would get stunned or disturbed.
A weaver who has to direct and to interweave a great many little threads has no time to philosophize about it, but rather he is so absorbed in his work that he doesn’t think but acts, and he feels how things must go more than he can explain it. Even though neither you nor I, in talking together, would come to any definite plans, etc., perhaps we might mutually strengthen that feeling that something is ripening within us. And that is what I should like.

It – How Churches and Leaders Can Get It and Keep It (2008, Zondervan)

Warning about the non-conclusiveness for the experimental foundation of electrostatic theory, in a footnote of the third edition of: [James Clerk Maxwell, A Treatise on Electricity and Magnetism, Vol.1, 3rd Edition, Oxford University Press, 1891, 37]
Quotes eat me

Interviewed by Harry Kreisler, February 28, 2003. In Conversations with History http://globetrotter.berkeley.edu/people3/Dalgarno/dalgarno-con0.html. Institute of International Studies, UC Berkeley.
Context: Research is a matter of overcoming obstacles. That's what research is about. There are problems. There are difficulties. It's hard to make sense of a collection of information or whatever. Obstacles are the nature of research. Maybe that's why some people give up. There's always an obstacle. You overcome one to find there's another one.