Scientific knowledge is an enabling power to do either good or bad — but it does not carry instructions on how to use it.
Richard P. FeynmanWhen the problem [quantum chromodynamics] is finally solved, it will all be by imagination. Then there will be some big thing about the great way it was done. But it's simple -it will all be by imagination, and persistence.
Richard P. FeynmanI learned from her that every woman is worried about her looks, no matter how beautiful she is.
Richard P. Feynman