Popper, Karl

"Truth has a way of asserting itself despite our reluctance to hear it."

"The greatest gift we can give to future generations is an open mind."

"We live in the space between what we know and what we hope for."

"Innovation requires both creativity and critical judgment."

"The pursuit of truth is lonely, but it is also the most noble endeavor."

"We must learn to distinguish between our wishes and the facts."

"Justice is not about equality of outcome; it is about equality of opportunity and fair process."

"Every person is a world unto themselves, worthy of respect and consideration."

"The greatest threat to freedom is not external tyranny, but internal complacency."

"We become what we practice, not what we intend."

"Loneliness is the price of integrity in a world of conformity."

"Hope without knowledge is mere fantasy; knowledge without hope is despair."

"We must always ask: To what end? What are we really trying to achieve?"

"The growth of knowledge is the discovery of our ignorance."

"We are not born with fixed ideas. Ideas are born in us."

"The attempt to make heaven on earth produces a hell."

"Science may be described as the art of systematic over-simplification."

"One cannot be both a good scientist and a dogmatist."

"The more we learn about the world, and the deeper our learning, the more conscious, specific, and articulate will be our knowledge of what we do not know."

"Every solution to a problem creates new problems."

"I am not interested in being right, only in getting nearer to the truth."

"The paradox is only a conflict between reality and your feeling of what reality ought to be."

"Human knowledge is capable of increasing indefinitely."

"We should search for our mistakes and our ignorance, not for our knowledge."

"It is impossible to speak in such a way that you cannot be misunderstood."

"The more open the society, the greater the need for freedom of speech."

"There is no greater tragedy than the loss of freedom."

"I may be wrong and you may be right, and by an effort, we may get nearer to the truth."

"All life is problem-solving."

"To be without dogma is not to be without principles."