“It is always important in matters of high politics to know what you do not know. Those who think they know, but are mistaken, and act upon their mistakes, are the most dangerous people to have in charge.”

“People with wisdom know that it is important to correct their own mistakes, while people without wisdom find it necessary to point out the mistakes of others. People with strong faith know that it is important to clear their own hearts, while those with unsteady faith seek to find fault in the hearts and prayers of others. This becomes a habit in their lives. But those who pray to Allah with faith, determination, and certitude know that the most important thing in life is to surrender their hearts to Allah.”

Bawa Muhaiyaddeen (1900–1986) Sri Lankan Sufi leader

“I don’t think Father Hugo is any more mistaken than the most learned theologian and he might be closer to the truth. Jacob, I don’t think anyone knows Who’s in charge.”

Robert A. Heinlein book I Will Fear No Evil

“How much of what you know about business is shaped by mistaken reactions to past mistakes?”

Peter Thiel (1967) American entrepreneur, venture capitalist, and hedge fund manager

“Do you know what I think about crying? I think some people have to learn to do it. But once you learn, once you know how to really cry, there's nothing quite like it. I feel sorry for those who don't know the trick. It's like whistling or singing.”

Anne Rice book Memnoch the Devil

“Knowing how to think empowers you far beyond those who know only what to think.”

Neil deGrasse Tyson (1958) American astrophysicist and science communicator

“People who think they know everything are annoying to those of us who do.”

Jill Shalvis (1963) American writer

“Those people who think they know everything are a great annoyance to those of us who do.”

Isaac Asimov (1920–1992) American writer and professor of biochemistry at Boston University, known for his works of science fiction …

“It's not who you know, but who you are that matters most.”

Keariene Muizz (1977) American artist

“there are three kinds of people in the world: those who don't know and don't know they don't know; those who don't know and do know they don't know; and those who know and know how much they still don't know.”

Karen Marie Moning (1964) author