By keeping labor supply down, immigration policy tends to keep wages high. Let us underline this basic principle: Limitation of the supply of any grade of labor relative to all other productive factors can be expected to raise its wage rate; and increase in supply will, other things being equal, tend to depress wage rates.
Paul SamuelsonSuppose it was demonstrated that one out of twenty alcoholics could learn to become a moderate social drinker. The experienced clinician would answer, 'Even if true, act as if it were false, for you will never identify that one in twenty, and in the attempt five in twenty will be ruined.' Investors should forsake the search for such tiny needles in huge haystacks.
Paul SamuelsonMarshall's crime is to pretend to handle imperfect competition with tools only applicable to perfect competition.
Paul Samuelson