This is a quote from the famous economist John Maynard Keynes. Keynes was not a reckless man who spoke with disregard to the long term. He realized that economists are useless if all they can tell us is to be patient and ride out the storms until markets quiet themselves again. What is needed is not more patience but bold action in the presence of threats to our way of life.
Keynes wrote about the future of mankind and about the possibilities that greater economic prosperity might bring. He cherished a high quality of life. He wanted to preserve a capitalist system capable of protecting this prosperity against the danger of a collectivist tyranny.
There are those who oppose this prosperity and seek to destroy it. To do nothing, because a sacrifice might be required, is to take the cowards way. What is needed is for some to take appropriate action. If we are not willing to make sacrifices then the tyrants, the trolls, those who oppose our way of life, win.