Logic must no more admit a unicorn than zoology can.

All great books contain boring portions, and all great lives have contained uninteresting stretches.

You are a wicked motorcar, and I shall not give you any more petrol until you go.

Philosophy, from the earliest times, has made greater claims, and achieved fewer results, than any other branch of learning.

A happy life must be to a great extent a quiet life, for it is only in an atmosphere of quiet that true joy dare live.

The search for something permanent is one of the deepest of the instincts leading men to philosophy.

In detective stories . . . I alternately identify myself with the murderer and the huntsman-detective, but . . . there are those to which this vicarious outlet is too mild.