On Curiosity

"Curiosity is a mental investment"

-mannoy

"The important thing is not to stop questioning. Curiosity has its own reason for existing. One cannot help but be in awe when he contemplates the mysteries of eternity, of life, of the marvelous structure of reality. It is enough if one tries merely to comprehend a little of this mystery everyday. Never lose a holy curiosity."
-Albert Einstein

“The illiterates of the 21st century will not be those who cannot read and write but those who cannot learn, unlearn, and relearn”

- Alvin Toffler

Some things you know and believe might be wrong, and you should be prepared to accept this possibility and change your mind.  Be open to learn, unlearn, and relearn.

Curiosity is an emotion related to natural inquisitive behavior such as exploration, investigation, and learning, evident by observation in human and many animal species. The term can also be used to denote the behavior itself being caused by the emotion of curiosity. As this emotion represents a drive to know new things, curiosity is the fuel of science and all other disciplines of human study.

-en.wikipedia.org