“It is the true season of love when we know that we alone can love, that no one could ever have loved before us, and that no one will ever love in the same way after us.
“Mathematicians are like Frenchmen: whatever you say to them, they translate it into their own language, and forthwith it means something entirely different
“It was one of the deadliest and heaviest feelings of my life to feel that I was no longer a boy. From that moment I began to grow old in my own esteem, and in my esteem age is not estimable
“I have achieved my seventy years in the usual way, by sticking strictly to a scheme of life which would kill anybody else....I will offer here, as a sound maxim, this: That we can't reach old age by another man's road
“Marriage is an alliance entered into by a man who can't sleep with the window shut, and a woman who can't sleep with the window open.
“If we could give every individual the right amount of nourishment and exercise, not too little and not too much, we would have found the safest way to health.