154 Quotes by Louis Pasteur

If perchance you should falter during the journey, a hand would be there to support you. If that should be wanting, God, who alone could take that hand from you, would Himself accomplish its work.

Never will the doctrine of spontaneous generation recover from the mortal blow struck by this simple experiment.

When you believe you have found an important scientific fact, and are feverishly curious to publish it, constrain yourself for days, weeks, years sometimes, fight yourself, try and ruin your own experiments, and only proclaim your discovery after having exhausted all contrary hypotheses. But when, after so many efforts you have at last arrived at a certainty, your joy is one of the greatest which can be felt by a human soul.

Worship the spirit of criticism.

It is surmounting difficulties that makes heroes.

Change only favours minds that are diligently looking and preparing for discovery.

Science proceeds by successive answers to questions more and more subtle, coming nearer and nearer to the very essence of phenomena.

Do not put forward anything that you cannot prove by experimentation.

Outsidetheir laboratories, thephysicianand chemist are soldiers without arms on the field of battle.