The Ultimate Court Of Appeal Is Observation

The Secret Of Genius Is To Carry The Spirit Of Childhood Into Maturity.

The Only Freedom I Care About Is The Freedom To Do Right; The Freedom To Do Wrong I Am Ready To Part With On The Cheapest Terms To Anyone Who Will Take It Of Me

It Is A Popular Delusion That The Scientific Enquirer Is Under An Obligation Not To Go Beyond Generalisation Of Observed Facts...but Anyone Who Is Practically Acquainted With Scientific Work Is Aware That Those Who Refuse To Go Beyond The Facts, Rarely Get As Far.

If The Hypothesis Of Evolution Is True, Living Matter Must Have Arisen From Non-living Matter; For By The Hypothesis The Condition Of The Globe Was At One Time Such, That Living Matter Could Not Have Existed In It, Life Being Entirely Incompatible With The Gaseous State.

The Struggle For Existence Holds As Much In The Intellectual As In The Physical World. A Theory Is A Species Of Thinking, And Its Right To Exist Is Coextensive With Its Power Of Resisting Extinction By Its Rivals.