It Is Not Of The Essence Of

That Language Is An Instrument Of Human Reason, And Not Merely A Medium For The Expression Of Thought, Is A Truth Generally Admitted.

The General Laws Of Nature Are Not, For The Most Part, Immediate Objects Of Perception.

Probability Is Expectation Founded Upon Partial Knowledge. A Perfect Acquaintance With All The Circumstances Affecting The Occurrence Of An Event Would Change Expectation Into Certainty, And Leave Nether Room Nor Demand For A Theory Of Probabilities.

It Is Not Of The Essence Of Mathematics To Be Conversant With The Ideas Of Number And Quantity.

No Matter How Correct A Mathematical Theorem May Appear To Be, One Ought Never To Be Satisfied That There Was Not Something Imperfect About It Until It Also Gives The Impression Of Being Beautiful.