The Only Thing That Can Bring Joy

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

God Grant That By My Persevering Labours I May Bring A Little Stone To The Frail And Ill-assured Edifice Of Our Knowledge Of Those Deep Mysteries Of Life And Death Where All Our Intellects Have So Lamentably Failed.

It Is Surmounting Difficulties That Makes Heroes.

If You Suppress Laboratories, Physical Science Will Be Stricken With Barrenness And Death.

If It Is A Terrifying Thought That Life Is At The Mercy Of The Multiplication Of These Minute Bodies [microbes], It Is A Consoling Hope That Science Will Not Always Remain Powerless Before Such Enemies.