We make progress if, and only if, we are prepared to learn from our mistakes. - Karl R. Popper.
"We make progress if, and only if, we are prepared to learn from our mistakes." - Karl R. Popper. "우리는 실수로부터 배울 준비가 되어 있을 때, 그리고 오직 그때만 진보할 수 있다." - 카를 R. 포퍼. "We make progress if, and only if, we are prepared to learn from …