Someday
The Great Wall of China was originally designed for the purposes that most border walls are; protection from invasion, immigration/emigration control, and taxation of goods.
As a kid, I never thought much about the Great Wall. But when Nixon became the first U.S. president to visit the PRC in 1972, my curiosity was piqued. "Someday," I thought. "Someday."
It would take 47 years before I would follow President Nixon's lead and travel to China. In these uncertain times, nurture all of your "someday" dreams. Time disappears faster than anything else.
"There are seven days in a week and someday isn't one of them."