Philosophy stands in the same relation to the study of the actual world as masturbation to sexual love.
Karl Marx
Unintelligible answers to insoluble problems.
Henry Brooks Adams
We are much beholden to Machiavel and others, that write what men do, and not what they ought to do.
Francis Bacon
Pythagoras, Locke, Socrates -- but pages might be filled up, as vainly as before, with the sad usage of all sorts of sages, who in his life-time, each was deemed a bore! The loftiest minds outrun their tardy ages.
Lord Byron
Those who lack the courage will always find a philosophy to justify it.
Albert Camus
There is no record in history of a happy philosopher.
Henry Louis Mencken
Philosophy is doubt.
Michel Eyquem de Montaigne
In philosophy if you aren't moving at a snail's pace you aren't moving at all.
Iris Murdoch
Philosophy! Empty thinking by ignorant conceited men who think they can digest without eating!
Iris Murdoch
Every philosophy is the philosophy of some stage of life.
Friedrich Nietzsche
To have no time for philosophy is to be a true philosopher
Blaise Pascal
Many talk like philosophers yet live like fools
Unknown
Take from the philosopher the pleasure of being heard and his desire for knowledge ceases.
Jean Jacques Rousseau
Bad philosophers may have a certain influence; good philosophers, never
Bertrand Russell