The Credit Of Advancing Science Has Always

Our Friends Show Us What We Can Do; Our Enemies Teach Us What We Must Do.

Everything In The World May Be Endured, Except Only A Succession Of Prosperous Days. [ger., Alles In Der Welt Lasst Sich Ertragen, Nur Nicht Eine Reihe Von Schonen Tagen.]

I Was Oppressed With The Sensations I Then Felt; I Sunk Under The Weight Of Them.

Piety Is Not A Goal But A Means To Attain Through The Purest Peace Of Mind The Highest Culture.

If I Work Incessantly To The Last, Nature Owes Me Another Form Of Existence When The Present One Collapses.