"If medicine was practiced in 1965 the way it's practiced today, there's no question that prescriptions would have been included in Medicare"

"Questions are never indiscreet, answers sometimes are"

"Question everything. Learn something. Answer nothing"

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

"Do not waste your time on Social Questions. What is the matter with the poor is Poverty; what is the matter with the rich is Uselessness"

"Youth is not a question of years: one is young or old from birth"

"The question is not, "Can they reason?" nor, "Can they talk?" but rather, "Can they suffer?""

"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 power to question is the basis of all human progress"

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