작년 11월 나의 단골 헌책방에서 샀던,
그리고 이제서야 꺼내 읽기 시작한 책,

천재처럼 생각하라~~에 나온 말..

철학자 버트란드 러셀이 한 말이란다.

The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt.

나는 자신만만 멍청이인가, 의심많은 똑똑이인가..........

Open your mind.

Ask your family or co-workers to give you " Thumbs down" when they think you're being closed-minded.
when they make this critical gesture, jot down what you were saying at the time so that you can consider changing the pattern.