Mark Twain Aging Quotations

I was young and foolish then; now I am old and foolish

We can't reach old age by another man's road. My habits protect my life but they would assassinate you.

We have no permanent brains until we are forty. Then they begin to harden, presently they petrify, then business begins. Since forty I have been regular about going to bed and getting up -- and that is one of the main things.

(Twain on Cain): it was his misfortune to live in a dark age that knew not the beneficent Insanity Plea

The man who is a pessimist before forty-eight knows too much; if he is an optimist after it he knows too little

The older I get, the more clearly I remember things that never happened.