I don't know if I'm remembering his correct name, but it's the name that came to me as I was remembering.
I had went out on my normal bike ride in the country. While most of my route is flat, one road has a somewhat steep hill. As I road to the top of the hill I stopped to call my wife. Then I noticed an old pickup truck across the road. A middle aged man was by the truck. He called to me a compliment for making it up the hill on my bike. He said that he was 48 and it was a tough hill for him to climb. He thought that I must be about 60. I told him that I was 62.
"If a tree falls in the forest, and no one is around to hear it, does it make a sound?" To answer that, we need to define, "What is sound?"
"A tree falling in the forest without ears to hear makes no sound". I have heard this saying a number of times. Now I think that I may have finally understood this saying. When a tree falls in the forest, it only moves air and moves and cracks branches. These send out vibrations. It is only the ears of a living thing with ears that hears. When the vibrations enter the ear canal they are translated or recorded as sounds within the brain of the living thing. So, in a way, you could say that the sounds only happen within the brain of the living creature.