Nothing Is Lost And Nothing

Do Not Let Yourself Be Tainted With A Barren Skepticism.

Virulence Appears In A New Light Which Cannot But Be Alarming To Humanity; Unless Nature, In Her Evolution Down The Ages (an Evolution Which, As We Now Know, Has Been Going On For Millions, Nay, Hundreds Of Millions Of Years), Has Finally Exhausted All The Possibilities Of Producing Virulent Or Contagious Diseases - Which Does Not Seem Very Likely.

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.'

My Opinion - Nay More, My Conviction - Is That, In The Present State Of Science, As You Rightly Say, Spontaneous Generation Is A Chimera; And It Would Be Impossible For You To Contradict Me, For My Experiments All Stand Forth To Prove That Spontaneous Generation Is A Chimera.

Science Proceeds By Successive Answers To Questions More And More Subtle, Coming Nearer And Nearer To The Very Essence Of Phenomena.