"Our nation is today a powerful nation"

"It is only when they go wrong that machines remind you how powerful they are"

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

"Powerful indeed is the empire of habit"

"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"

"The most valuable possession you can own is an open heart. The most powerful weapon you can be is an instrument of peace"

"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"

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

"The science of today is the technology of tomorrow"

"The politician's promises of yesterday are the taxes of today"

"Education is the most powerful weapon which you can use to change the world"