Of all my inventions, I liked the phonograph best
It is the best book ever written on the subject. There is nothing like it!
Our greatest weakness lies in giving up.
Vision without execution is delusion.
Most of the exercise I get is from standing and walking around laboratory tables all day. I derive more benefit and entertainment from this than some of my friends and competitors get from playing games like golf.
Your worth consists in what you are and not in what you have.