“The method of ‘postulating’ what we want has many advantages; they are the same as the advantages of theft over honest toil. Let us leave them to others and proceed with our honest toil.”
Bertrand Russell, Introduction to Mathematical Philosophy 1919 ( http://plato.stanford.edu/entries/logical-construction/#Hon )
Bertrand Russell, Introduction to Mathematical Philosophy 1919 ( http://plato.stanford.edu/entries/logical-construction/#Hon )