I have noticed even people who claim everything is predestined, and that we can do nothing to change it, look before they cross the road.
— Stephen Hawking

I have always noticed that in portraits of really great writers the mouth is always firmly closed.
Gertrude Stein noticed quote

Technique is noticed most markedly in the case of those who have not mastered it.
— Leon Trotsky

Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac?
— George Carlin

I was going to have cosmetic surgery until I noticed that the doctor's office was full of portraits by Picasso.
— Rita Rudner