True Science Teaches Us To Doubt And,

Science Increases Our Power In Proportion As It Lowers Our Pride.

Particular Facts Are Never Scientific; Only Generalization Can Establish Science.

Laplace Considers Astronomy A Science Of Observation, Because We Can Only Observe The Movements Of The Planets; We Cannot Reach Them, Indeed, To Alter Their Course And To Experiment With Them. "on Earth," Said Laplace, "we Make Phenomena Vary By Experiments; In The Sky, We Carefully Define All The Phenomena Presented To Us By Celestial Motion." Certain Physicians Call Medicine A Science Of Observations, Because They Wrongly Think That Experimentation Is Inapplicable To It.

Our Ideas Are Only Intellectual Instruments Which We Use To Break Into Phenomena; We Must Change Them When They Have Served Their Purpose, As We Change A Blunt Lancet That We Have Used Long Enough.

Man Does Not Limit Himself To Seeing; He Thinks And Insists On Learning The Meaning Of Phenomena Whose Existence Has Been Revealed To Him By Observation. So He Reasons, Compares Facts, Puts Questions To Them, And By The Answers Which He Extracts, Tests One By Another. This Sort Of Control, By Means Of Reasoning And Facts, Is What Constitutes Experiment, Properly Speaking; And It Is The Only Process That We Have For Teaching Ourselves About The Nature Of Things Outside Us.