Top 90 Doubt Quotes (2025 Update)
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51. “And by the way, everything in life is writable about if you have the outgoing guts to do it, and the imagination to improvise. The worst enemy to creativity is self-doubt.”

— Sylvia Plath

52. “Follow the evidence wherever it leads, and question everything.”

— Neil deGrasse Tyson

53. “Successful people have fear, successful people have doubts, and successful people have worries. They just don’t let these feelings stop them.”

— T. Harv Eker

54. “If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things.”

— René Descartes

55. “To know, is to know that you know nothing. That is the meaning of true knowledge. For a man who claims to have knowledge, while actually knowing nothing, is less smart than you, who claim to know nothing.”

— Socrates

56. “Another day, another opportunity to prove everyone who doubts you wrong.”

— Michael Jordan

57. “Inaction breeds doubt and fear. Action breeds confidence and courage.”

— Dale Carnegie

58. “Doubt is only removed by action. If you’re not working then that’s when doubt comes in.”

— Conor McGregor

59. “Doubt kills more dreams than failure ever will.”

— Suzy Kassem

60. “Positive minds produce positive lives. Negative minds produce negative lives. Positive thoughts are always full of faith and hope. Negative thoughts are always full of fear and doubt.”

— Joyce Meyer

61. “In a world where death is the hunter, my friend, there is no time for regrets or doubts. There is only time for decisions.”

— Carlos Castaneda

62. “The less you think, the more you believe.”

— Richard Dawkins

63. “Doubters don’t win, winners don’t doubt.”

— Denis Waitley

64. “When you doubt your power, you give power to your doubt.”

— Honoré de Balzac

65. “No Fear, No Hesitation, No Surprise, No Doubt.”

— Miyamoto Musashi

66. “Doubt is uncomfortable, certainty is ridiculous.”

— Voltaire

67. “Doubt your doubts before you doubt your faith.”

— Dieter F. Uchtdorf

68. “There is no learning without having to pose a question. And a question requires doubt.”

— Richard P. Feynman

69. “In case of doubt, attack.”

— George S. Patton Jr.

70. “Imma be what I set out to be without a doubt undoubtedly.”

— Eminem

71. “Put one foot in front of the other. Keep marching forward, even when doubt, fear, and failure all come knocking at your door.”

— Jared Leto

72. “I’m often wrong, but never in doubt.”

— Ivy Baker Priest

73. “I always knew I was going to be rich. I don’t think I ever doubted it for a minute. ”

— Warren Buffett

74. “In case of doubt, push on just a little further and then keep on pushing.”

— George S. Patton Jr.

75. “Only the real, rare, true scientific minds can endure doubt, which is attached to all our knowledge.”

— Sigmund Freud

76. “Breathe in, breathe out, no fear, no doubt.”

— Martha N. Beck

77. “Often people just don’t see what I see. They have too much doubt. You can’t do your best when you’re doubting yourself. If you don’t believe in yourself, who will?”

— Michael Jackson

78. “One of the ego’s favorite paths of resistance is to fill you with doubt.”

— Ram Dass

79. “If I am anything, which I highly doubt, I have made myself so by hard work.”

— Isaac Newton

80. “There’s no doubt. It’s certain that I’ll be 100 percent.”

— Lionel Messi

81. “She quietly expected great things to happen to her, and no doubt that’s one of the reasons why they did.”

— Zelda Fitzgerald

82. “There can be no doubt that all our knowledge begins with experience.”

— Immanuel Kant

83. “I can doubt everything, except one thing, and that is the very fact that I doubt. Simply put – I think, therefore I am.”

— René Descartes

84. “All fanaticism is repressed doubt.”

— C.G. Jung

85. “Medicine heals doubts as well as diseases.”

— Karl Marx

86. “Doubts and mistrust are the mere panic of timid imagination, which the steadfast heart will conquer, and the large mind transcend.”

— Helen Keller

87. “If you can keep your head when all about you Are losing theirs and blaming it on you, If you can trust yourself when all men doubt you, But make allowance for their doubting too;!”

— Rudyard Kipling

88. “I keep going because I doubt myself. It drives me to be better. I’ve learned that the mastery of self-doubt is the key to success. It’s like being animated by the love of a woman – the need to be worthy of her.”

— Will Smith

89. “Doubt is one of the names of intelligence.”

— Jorge Luis Borges

90. “The support gets me to the gym but the doubt keeps me there.”

— Conor McGregor

91. “First doubt your doubts before you doubt your faith. We must never allow doubt to hold us prisoner and keep us from the divine love, peace, and gifts that come through faith in the Lord Jesus Christ.”

— Dieter F. Uchtdorf

92. “We demand rigidly defined areas of doubt and uncertainty!”

— Douglas Adams

93. “Sleep is like the unicorn – it is rumored to exist, but I doubt I will see any.”

— Dr. Seuss

94. “My principal sin is doubt. I doubt everything, and am in doubt most of the time.”

— Leo Tolstoy

95. “If there is anyone out there who still doubts that America is a place where all things are possible; who still wonders if the dream of our founders is alive in our time; who still questions the power of our Democracy; Tonight is your answer.”

— Barack Obama