“Your greatest strength, Ray, and possibly your only strength, is in pretending that you don't understand simple things.”

Variant: In the end, some of your greatest pains become your greatest strengths.

Source: Philosophies from an old Journal

Speech in West Calder, Scotland (27 November 1879), quoted in W. E. Gladstone, Midlothian Speeches 1879 (Leicester University Press, 1971), p. 116.
1870s
Context: My fourth principle is—that you should avoid needless and entangling engagements. You may boast about them, you may brag about them, you may say you are procuring consideration of the country. You may say that an Englishman may now hold up his head among the nations. But what does all this come to, gentlemen? It comes to this, that you are increasing your engagements without increasing your strength; and if you increase your engagements without increasing strength, you diminish strength, you abolish strength; you really reduce the empire and do not increase it. You render it less capable of performing its duties; you render it an inheritance less precious to hand on to future generations.

The Modern Prince and other Writings, quoting a letter to his sister

Source: Queen Radio Episode 14 December 2020

Source: The Unbearable Lightness of Being (1984), Part Three: Words Misunderstood

Knox College commencement address (3 June 2006)
Context: But you have one thing that may save you, and that is your youth. This is your great strength. It is also why I hate and fear you. Hear me out. It has been said that children are our future. But does that not also mean that we are their past? You are here to replace us. I don't understand why we're here helping and honoring them. You do not see union workers holding benefits for robots.

Source: Life, the Truth, and Being Free (2010), p. 83