The demand for certainty is one which is natural to man, but is nevertheless an intellectual vice. If you take your children for a picnic on a doubtful day, they will demand a dogmatic answer as to whether it will be fine or wet, and be disappointed in you when you cannot be sure.

Nothing is so exhausting as indecision, and nothing is so futile.

In the revolt against idealism, the ambiguities of the word experience have been perceived, with the result that realists have more and more avoided the word.

One of the most interesting and harmful delusions to which men and nations can be subjected is that of imagining themselves special instruments of the Divine Will.

Every living thing is a sort of imperialist, seeking to transform as much as possible of its environment into itself.

Punctuality is a quality the need of which is bound up with social co-operation.

Philosophy is that part of science which at present people chose to have opinions about, but which they have no knowledge about. Therefore every advance in knowledge robs philosophy of some problems which formerly it had ...and will belong to science.