Grandma and Grandpa were sitting in their porch rockers watching the beautiful sunset and reminiscing about "the good old days," when Grandma turned to Grandpa and said, "Honey, do you remember when we first started dating and you used to casually reach over and take my hand?"

In his book Primal, Mark Batterson shares this story: "In 1801, Sir David Brewster was awarded an honorary master of arts degree from the University of Edinburgh and was ordained to preach. His first sermon turned into his last sermon. Brewster was so nervous when he got behind the pulpit that he vowed never to do it again. In the words of a colleague, 'It was a pity for the National Church of Scotland, but a good day for science.' Brewster decided to pursue his first love, the science of optics. In 1816, his childlike passion produced an invention that has captured the imagination of children ever since. Brewster called it a kaleidoscope. Containing fragments of colored glass, the kaleidoscope reflects light in an endless variety of colors and patterns.