Man, whatever else he may be, is primarily a practical being, whose mind is given him to aid in adapting him to this world's life
Philosophy is "an unusually stubborn attempt to think clearly.
It is your friends who make your world.
Most men have a good memory for facts connected with their own pursuits.
As a rule we disbelieve all the facts and theories for which we have no use.
You can't out-perform your self-image.