Without that sense of security which property gives, the land would still be uncultivated. - François Quesnay

You recognize but one rule of commerce; that is (to avail myself of your own terms) to allow free passage and freedom of action to all buyers and sellers whoever they may be.

To secure the greatest amount of pleasure with the least possible outlay should be the aim of all economic effort... when everyone does this the natural order, instead of being endangered, will be all the better assured.

Calculations are to the economic science what bones are to the human body. Without them it will always be a vague and confused science, at the mercy of error and prejudice.