1. “Knowledge is of no value unless you put it into practice.”

— Anton Chekhov

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2. “To acquire knowledge, one must study; but to acquire wisdom, one must observe.”

— Marilyn Vos Savant

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3. “Shall I teach you what knowledge? When you know a thing, say that you know it; when you do not know a thing, admit that you do not know it. That is knowledge.”

— Confucius

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4. “Knowledge has to be improved, challenged, and increased constantly, or it vanishes.”

— Peter F. Drucker

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5. “I don't want to believe. I want to know.”

— Carl Sagan

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6. “Sharing knowledge is not about giving people something, or getting something from them. That is only valid for information sharing. Sharing knowledge occurs when people are genuinely interested in helping one another develop new capacities for action; it is about creating learning processes.”

— Peter Senge

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7. “Knowledge without action is wastefulness and action without knowledge is foolishness.”

— Al-Ghazali

8. “All men by nature desire knowledge.”

— Aristotle

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9. “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

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10. “Your perspective is always limited by how much you know. Expand your knowledge and you will transform your mind.”

— Bruce H. Lipton

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11. “The true lover of knowledge naturally strives for truth, and is not content with common opinion, but soars with undimmed and unwearied passion till he grasps the essential nature of things.”

— Plato

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12. “It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring.”

— Carl Sagan

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13. “The gift of knowledge is the highest gift in the world.”

— Swami Vivekananda

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14. “Knowledge exists potentially in the human soul like the seed in the soil; by learning the potential becomes actual.”

— Al-Ghazali

15. “To find yourself, think for yourself.”

— Socrates

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16. “True knowledge exists in knowing that you know nothing. And in knowing that you know nothing, that makes you the smartest of all.”

— Socrates

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17. “There is no knowledge and science like pondering and thought; and there is no prosperity and advancement like knowledge and science.”

— Ali ibn Abi Talib

18. “Simplicity is the ultimate sophistication.”

— Leonardo da Vinci

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19. “Any fool can know. The point is to understand.”

— Albert Einstein

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20. “People like it when they understand something that they previously thought they couldn’t understand. It’s a sense of empowerment.”

— Neil deGrasse Tyson

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21. “A mind needs books as a sword needs a whetstone, if it is to keep its edge.”

— George R.R. Martin

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22. “Write what you know.”

— Mark Twain

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23. “The snake which cannot cast its skin has to die. As well the minds which are prevented from changing their opinions; they cease to be mind.”

— Friedrich Nietzsche

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24. “I cannot teach anybody anything. I can only make them think.”

— Socrates

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25. “A room without books is like a body without a soul.”

— Marcus Tullius Cicero

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26. “Know thyself.”

— Socrates

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27. “If you know the enemy and know yourself, you need not fear the result of a hundred battles. If you know yourself but not the enemy, for every victory gained you will also suffer a defeat. If you know neither the enemy nor yourself, you will succumb in every battle.”

— Sun Tzu

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28. “I cannot live without books.”

— Thomas Jefferson

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29. “No man was ever wise by chance.”

— Seneca

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30. “The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts.”

— Bertrand Russell

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31. “We are an intelligent species and the use of our intelligence quite properly gives us pleasure. In this respect the brain is like a muscle. When we think well, we feel good. Understanding is a kind of ecstasy.”

— Carl Sagan

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32. “Those who know do not speak. Those who speak do not know.”

— Lao Tzu

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33. “When you know better you do better.”

— Maya Angelou

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34. “My alma mater was books, a good library. I could spend the rest of my life reading, just satisfying my curiosity.”

— Malcolm X

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

— Neil deGrasse Tyson

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36. “Miss a meal if you have to, but don't miss a book.”

— Jim Rohn

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37. “To not know math is a severe limitation to understanding the world.”

— Richard P. Feynman

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38. “Remember, your mind is your greatest asset, so be careful what you put into it.”

— Robert T. Kiyosaki

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39. “There are no facts, only interpretations.”

— Friedrich Nietzsche

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40. “In the age of information, ignorance is a choice.”

— Donald Miller

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41. “To know that we know what we know, and that we do not know what we do not know, that is true knowledge.”

— Confucius

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42. “The good thing about science is that it’s true whether or not you believe in it.”

— Neil deGrasse Tyson

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43. “Some books should be tasted, some devoured, but only a few should be chewed and digested thoroughly.”

— Francis Bacon

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44. “All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident.”

— Arthur Schopenhauer

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45. “Listen more than you talk. Nobody learned anything by hearing themselves speak.”

— Richard Branson

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46. “Mathematics is a more powerful instrument of knowledge than any other that has been bequeathed to us by human agency.”

— René Descartes

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47. “Nobody ever figures out what life is all about, and it doesn’t matter. Explore the world. Nearly everything is really interesting if you go into it deeply enough.”

— Richard P. Feynman

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48. “Sharing knowledge is the most fundamental act of friendship. Because it is a way you can give something without losing something.”

— Richard Stallman

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49. “Research is creating new knowledge.”

— Neil Armstrong

50. “Education consists mainly of what we have unlearned.”

— Mark Twain

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