source: John Allen Paulos (2007). “A Mathematician Plays The Stock Market”, p.5, Basic Books
topic: Inspirational, Success, Knowing, Aging Gracefully, Uncertainty And Doubt

The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt.
topic: Inspirational, Success, Educational, Being Stupid, Stupid Life
topic: Mean, Humility, Acceptance, Knowing More, Knowing Things
Doubt is not a pleasant condition, but certainty is absurd.
topic: Inspirational, Faith, Atheist, Flour, Doubted
In these matters the only certainty is that nothing is certain.
topic: Matter, Certain, Certainty, Uncertainty And Doubt
source: "The Value of Science". Richard P. Feynman's public address at the National Academy of Sciences, Autumn 1955.
topic: Ignorance, Order, Ignorant, Paramount, Uncertainty And Doubt
topic: Life, Business, Future, Uncertainty And Doubt, Uncertainty Of Life
We demand rigidly defined areas of doubt and uncertainty!
source: Douglas Adams (2010). “The Ultimate Hitchhiker's Guide to the Galaxy”, p.158, Del Rey
topic: Humorous, Profound, Doubt, Risk Management, Uncertainty And Doubt
I don't feel frightened by not knowing things.
source: "No Ordinary Genius". Book by Christopher Sykes (p. 239), 1994.
topic: Mysterious Universe, Knowing, Frightened, Knowing Things, Uncertainty And Doubt
source: "Principles of Philosophy". Book by Rene Descartes, 1644.
topic: Life, Truth, Real, Spiritual Truth, Doubted
topic: Block, Power, Men, Superhuman Powers, Art Of Loving
topic: Ignorance, Knowing, Doubt, Progress In Science, Unsure
The beginning of knowledge is the discovery of something we do not understand.
topic: Knowledge, Caring, Discovery, Infinite Knowledge, Knowledge And Learning
Doubts are the ants in the pants of faith. They keep it awake and moving.
topic: Religious, Moving, Doubt, Kidding Yourself, Doubted
Uncertainty will always be part of the taking charge process.
topic: Business, Process, Taking Charge, Uncertainty And Doubt, Uncertainty Of Life
To have doubted one's own first principles is the mark of a civilized man.
topic: Humility, Men, Firsts, Doubted, Doubt And Certainty
topic: Men, Views, Issues, Uncertainty And Doubt, Important Issues
topic: Pain, Hero, Doubt, Uncertainty And Doubt
source: Source: www.interviewmagazine.com
topic: Thinking, Doubt, Found, Uncertainty And Doubt
topic: Character, Sacrifice, People, Collision, Blind Faith
source: "Lord, Increase Our Faith". Ensign magazine, pp. 52-53, November 1987.
topic: Prayer, Bridges, Giving, Chasms, Uncertainty And Doubt