"Imagination is more important than knowledge"

"Knowledge of what is possible is the beginning of happiness"

"The seat of knowledge is in the head, of wisdom, in the heart"

"What we want is to see the child in pursuit of knowledge, and not knowledge in pursuit of the child"

"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"

"Never stop learning; knowledge doubles every fourteen months"

"While there's been much progress on terrorism, there's still much work to do and it is very important that the countries work together in order to address this threat together"

"Life is far too important a thing ever to talk seriously about"

"Knowledge is knowing that we cannot know"

"Where knowledge ends, religion begins"

"The more extensive a man's knowledge of what has been done, the greater will be his power of knowing what to do"