There are no means of finding what either one person or many can do, but by trying - and no means by which anyone else can discover for them what it is for their happiness to do or leave undone
John Stuart MillI had learnt from experience that many false opinions may be exchanged for true ones, without in the least altering the habits of mind of which false opinions are made.
John Stuart MillMoney is a machine for doing quickly and commodiously what would be done, though less quickly and commodiously, without it.
John Stuart Mill