Even If We Could Be Certain That

Aristotle Is The Last Greek Philosopher Who Faces The World Cheerfully; After Him, All Have, In One Form Or Another, A Philosophy Of Retreat.

The Universe May Have A Purpose, But Nothing We Know Suggests That, If So, This Purpose Has Any Similarity To Ours.

One's Work Is Never So Bad As It Appears On Bad Days, Nor So Good As It Appears On Good Days.

To Create A Healthy Philosophy You Should Renounce Metaphysics But Be A Good Mathematician.

Moreover, The Attitude That One Ought To Believe Such And Such A Proposition, Independently Of The Question Whether There Is Evidence In Its Favor, Is An Attitude Which Produces Hostility To Evidence And Causes Us To Close Our Minds To Every Fact That Does Not Suit Our Prejudices.