Some favorites

"It was a high counsel that I once heard given to a young person, "Always do what you are afraid to do."

Ralph Waldo Emerson


"Our ideas, like orange-plants, spread out in proportion to the size of the box which imprisons the roots."

- Edward Bulwer Lytton


"In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual."

-Galileo Galilei


"I demolish my bridges behind me...then there is no choice but to move forward."

-Firdtjof Nansen

"We don't live in a world of reality,we live in a world of perceptions."

-Gerald J. Simmons