- “If you have an apple and I have an apple and we exchange apples then you and I will still each have one apple. But if you have an idea and I have an idea and we exchange these ideas, then each of us will have two ideas.”
George Bernard Shaw
- “With the first link, the chain is forged. The first speech censored, the first thought forbidden, the first freedom denied, chains us all irrevocably.”
Judge Aaron Satie
- “It is the mark of an educated mind to be able to entertain a thought without accepting it.”
Aristotle
- “If mankind minus one were of one opinion, then mankind is no more justified in silencing the one than the one - if he had the power - would be justified in silencing mankind.”
John Stuart Mill
- “The mind is not a vessel to be filled but a fire to be kindled.”
Plutarch
- “A good scientist, in other words, does not merely ignore conventional wisdom, but makes a special effort to break it. Scientists go looking for trouble.”
Paul Graham
- “We succeeded in taking that picture [from mars], and, if you look at it, you see a dot. That's here. That's home. That's us. On it, everyone you ever heard of ...”
Carl Sagan
- “Thought is subversive and revolutionary, destructive and terrible, thought is merciless to privilege, established institutions, and comfortable habit. ... Thought is great and swift and free, the light of the world, and the chief glory of man.”
Bertrand Russell
- “All that is necessary for the triumph of evil is that good men do nothing.”
Edmund Burke
- “If liberty and equality, as is thought by some are chiefly to be found in democracy, they will be best attained when all persons alike share in the government to the utmost.”
Aristotle
- “To deal with an uncertain future and still move forward, I advise people to have strong opinions, which are weakly held.”
Paul Saffo
- “Even the smallest person can change the course of the future.”
J.R.R. Tolkien
- “I suspect the statements that make people maddest are those they worry might be true.”
Paul Graham
- “In any field, find the strangest thing and then explore it.”
John Archibald Wheeler
- “A mind once expanded by a new idea never again returns to its original dimensions.”
Unknown
- “Just as the wave cannot exist for itself but is ever a part of the heaving surface of the ocean, so must I never live my life for itself, but always in the experience which is going on around me.”
Albert Schweitzer
