“Besides, we should never attempt to balance anybody's misery against somebody else's happiness.”
Source: Conjectures and Refutations: The Growth of Scientific Knowledge (1963), pp. 486-487
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Karl Popper 82
Austrian-British philosopher of science 1902–1994Related quotes

Rolling Stone (1976)
1970s
Context: I have never felt comfortable around people who talk about their feelings for Jesus, or any other deity for that matter, because they are usually none too bright... Or maybe "stupid" is a better way of saying it; but I have never seen much point in getting heavy with either stupid people or Jesus freaks, just as long as they don't bother me. In a world as weird and cruel as this one we have made for ourselves, I figure anybody who can find peace and personal happiness without ripping off somebody else deserves to be left alone. They will not inherit the earth, but then neither will I... And I have learned to live, as it were, with the idea that I will never find peace and happiness, either. But as long as I know there's a pretty good chance I can get my hands on either one of them every once in a while, I do the best I can between high spots.

Quoted in Dark Horse: The Life and Art of George Harrison, Geoffrey Giuliano, Da Capo Press, , p. 80. http://books.google.com/books?id=0PLygywwfL8C&pg=PA80&dq=if+you+drop+out+you+put+yourself+further+away+from+the+goal+of+life+than+if+you+were+to+keep+working&hl=en&sa=X&ei=0a6NT_nKD6PC2QX434mQDA&ved=0CDAQ6AEwAA#v=onepage&q=if%20you%20drop%20out%20you%20put%20yourself%20further%20away%20from%20the%20goal%20of%20life%20than%20if%20you%20were%20to%20keep%20working&f=false
Context: I don't mind anybody dropping out of anything, but it's the imposition on somebody else I don't like. The moment you start dropping out and then begging off somebody else to help you, then it's no good. It doesn't matter what you are as long as you work. It doesn't matter if you chop wood as long as you chop and keep chopping. Then you get what's coming to you. You don't have to drop out. In fact, if you drop out you put yourself further away from the goal of life than if you were to keep working.

At Apple's 2013 Q1 earnings call http://arstechnica.com/apple/2013/01/tim-cook-on-the-imac-cannibalization-is-a-huge-opportunity-for-us/ (2013-01-23)
iPad sales had been increasing at the expense of Mac sales.

telegraph.co.uk http://www.telegraph.co.uk/news/worldnews/vladimir-putin/9731278/Dmitry-Medvedev-muses-on-aliens-and-Vladimir-Putins-lateness.html
William Spencer Vickrey et al. Full Employment and Price Stability: The Macroeconomic Vision of William S. Vickrey. p. 4

2010s, 2016, September, First presidential debate (September 26, 2016)
“A gentleman is a man who never hurts anybody else unintentionally.”
Herbert Farjeon's Cricket Bag

Variant: Those who have courage and faith shall never perish in misery
Source: The Diary of a Young Girl