"The characteristic political attitude of today is not one of positive belief, but of despair"

"The best preparation for good work tomorrow is to do good work today"

"I like to use the hard times in the past to motivate me today"

"In thinking about nanotechnology today, what's most important is understanding where it leads, what nanotechnology will look like after we reach the assembler breakthrough"

"Today I bent the truth to be kind, and I have no regret, for I am far surer of what is kind than I am of what is true"

"The science of today is the technology of tomorrow"

"To be positive is to be mistaken at the top of one's voice"

"Work as though you would live forever, and live as though you would die today. Go another mile!"

"I am tomorrow, or some future day, what I establish today. I am today what I established yesterday or some previous day"

"There must be a positive and negative in everything in the universe in order to complete a circuit or circle, without which there would be no activity, no motion"

"When truth is no longer free, freedom is no longer real: the truths of the police are the truths of today"