Plato has dramatic strength ... but is quite unaware of the strength of the argument against his position ... and allows himself to be grossly unfair in arguing against it.

Science is at no moment quite right, but it is seldom quite wrong, and has, as a rule, a better chance of being right than the theories of the unscientific. It is, therefore, rational to accept it hypothetically.

Americans need rest, but do not know it. I believe this to be a large part of the explanation of the crime wave in the United States.

The solution of the difficulties which formerly surrounded the mathematical infinite is probably the greatest achievement of which our age has to boast.

It is undesirable to believe a proposition when there is no ground whatever for supposing it true

Half the useful work in the world consists of combating the harmful work.

Much that passes as idealism is disguised hatred or disguised love of power.