This one my Mother gave to me when I was 15 on a poster:
"Either lead, follow, or get the hell out of the way!"
She obviously knew me!
A friend who had previously been through a divorce gave me this advice when I was suffering through mine:
"It's only money".
"Money is one value system. There are others more important". That's one of mine.
"Everything starts somewhere, although some physicists disagree." - Terry Pratchett.
"Then take the universe and grind it down to the finest powder and sieve it through the finest sieve and then show me one atom of justice, one molecule of mercy. And yet you act as if there is some ideal order in the world, as if there is some... some
rightness in the universe by which it may be judged." - Death, The Hogfather by Terry Pratchett.
There's heaps of good ones that have come out of Terry Pratchett and Douglas Adams.
Al.