"No amount of experimentation can ever prove me right a single experiment can prove me wrong."

"The pursuit of excellence requires knowing that the river of time shapes the stones of destiny."

"To raise new questions, new possibilities, to regard old problems from a new angle, requires creative imagination and marks real advance in science."

"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it."

"In the depths of adversity, the strength of a community lies in its compassion."

"It is never too late to be what you might have been."

"Anyone working for a big company might be skeptical that a large business, or even a strictly online business, can form the same kind of friendly, loyal relationship with customers as a local retailer. I'm saying it's already been done because I lived it."

"The only thing that white people have that black people need, or should want, is power-and no one holds power forever."