In The Realm Of Scientific Observation, Luck

Since The Most Ancient Times, All Men, And Particularly Those Who Endeavored In The Practice Of Medicine, Have Brought Closer Together Two Natural Phenomena Of Capital Importance: Illness Or Fever And Fermentation.

When I Approach A Child, He Inspires In Me Two Sentiments; Tenderness For What He Is, And Respect For What He May Become.

Preconceived Ideas Are Like Searchlights Which Illumine The Path Of The Experimenter And Serve Him As A Guide To Interrogate Nature. They Become A Danger Only If He Transforms Them Into Fixed Ideas-this Is Why I Should Like To See These Profound Words Inscribed On The Threshold Of All The Temples Of Science: 'the Greatest Derangement Of The Mind Is To Believe In Something Because One Wishes It To Be So.'

Science Belongs To No One Country.

... By Chance You Will Say, But Chance Only Favors The Mind Which Is Prepared.