Don’t turn the truth into a lie using self-fulfilling…

“Lose the pessimism, Ms. Lane. It's a self-fulfilling prophecy.”

Karen Marie Moning book Darkfever

Source: Darkfever

“I have great faith in optimism as a guiding principle, if only because it offers us the opportunity of creating a self-fulfilling prophecy.”

Arthur C. Clarke (1917–2008) British science fiction writer, science writer, inventor, undersea explorer, and television series host

90th Birthday Reflections (2007)
Context: Communication technologies are necessary, but not sufficient, for us humans to get along with each other. This is why we still have many disputes and conflicts in the world. Technology tools help us to gather and disseminate information, but we also need qualities like tolerance and compassion to achieve greater understanding between peoples and nations.
I have great faith in optimism as a guiding principle, if only because it offers us the opportunity of creating a self-fulfilling prophecy. So I hope we've learnt something from the most barbaric century in history — the 20th. I would like to see us overcome our tribal divisions and begin to think and act as if we were one family. That would be real globalisation…

“Whatever we expect with confidence becomes our own self-fulfilling prophecy.”

Brian Tracy (1944) American motivational speaker and writer

“Pessimism becomes a self-fulfilling prophecy; it reproduces itself by crippling our willingness to act.”

Howard Zinn (1922–2010) author and historian

Source: You Can't Be Neutral on a Moving Train: A Personal History of Our Times

“It’s said that the biggest determinant of our lives is whether we see the world as welcoming or hostile. Each becomes a self-fulfilling prophecy.”

Gloria Steinem (1934) American feminist and journalist

Source: My Life on the Road

“The self-fulfilling prophecy is, in the beginning, a false definition of the situation evoking a new behaviour which makes the original false conception come "true".”

Robert K. Merton book Social Theory and Social Structure

Source: Social Theory and Social Structure (1949), p. 477 (1968 Enlarged edition)
Context: The self-fulfilling prophecy is, in the beginning, a false definition of the situation evoking a new behaviour which makes the original false conception come "true". This specious validity of the self-fulfilling prophecy perpetuates a reign of error. For the prophet will cite the actual course of events as proof that he was right from the very beginning.