Nature is man's teacher. She unfolds her treasures to his search, unseals his eye, illumes his mind, and purifies his heart; an influence breathes from all the sights and sounds of her existence.
The savants will write excellent volumes. There will be laureates. But wars will continue just the same until the forces of the circumstances render them impossible.
I would not leave anything to a man of action as he would be tempted to give up work; on the other hand, I would like to help dreamers as they find it difficult to get on in life.
The first time I saw nitroglycerine was in the beginning of the Crimean War. Professor Zinin in St. Petersburg exhibited some to my father and me, and struck some on an anvil to show that only the part touched by the hammer exploded without spreading.