Karl Popper

"Our task is not to foretell the future, but to be prepared for it."

"Every act of creation is an act of destruction of the previous forms."

"The more we learn, the more mysteries we discover."

"Tolerance does not mean accepting intolerance; it means resisting it."

"We must not confuse the map with the territory it represents."

"The greatest discoveries come from asking the right questions."

"To learn from experience, we must first have the courage to experience."

"The problem of induction cannot be solved, only transcended."

"We are the products of our decisions, not our circumstances."

"The pursuit of absolute truth leads to absolute error."

"Our language shapes our thinking, so we must be careful with our words."

"The best predictions come from understanding the principles at work."

"To be truly open-minded, we must be willing to change our minds."

"History teaches us not what will happen, but what is possible."

"The demand for certainty is the root of dogmatism."

"We must distinguish between problems of nature and problems of society."

"The undefended truth dies in the assault of error."

"To understand something is to understand its problems."

"The future is not written; it is waiting to be written by us."

"We grow by confronting our limitations, not by ignoring them."

"The pursuit of knowledge requires both humility and boldness."

"To live is to solve problems; to solve problems is to live."

"The greatest enemy of truth is not falsehood, but complacency."

"We must learn to think critically about our own thinking."

"The open society depends on the free exchange of ideas."

"Our errors are as important as our successes in the pursuit of knowledge."

"To create is to impose order on chaos."

"The test of a theory is whether it solves the problem it was designed to solve."

"We are all fallible, but we can correct our mistakes through criticism."

"The pursuit of happiness is often the best way to avoid it."