THE FOUNTAIN OF YOUTH

For centuries, mankind has searched for the Fountain of Youth.

Explorers braved stormy seas to find its source. Alchemists searched for magical formulas. Scientists studied ageless villagers in far-off mountains. Entire industries have been built around miraculous creams, vitamins, and exercise machines. Everyone searching for the same thing - a way to stay young.

Well, search no further.

We have uncovered the solution to the world's greatest mystery. My husband made his discovery on a preschool class minibus, and I made mine in a rocking chair with the quiet snore of my two-year-old grandbaby.

THE CLASS TRIP

My husband, "Sabba" to the kids, volunteered to be a parent on the preschool class trip. The night before the expedition, our kitchen table looked like a staging area for an African safari - a borrowed baseball cap, sunglasses, sunscreen, a water bottle, a bag lunch, and a handwritten list of instructions, which Sabba studied very, very carefully.

The next morning, he climbed aboard a preschool minibus wearing his white shirt, black cargo pants, and electric blue sneakers, and joined a crowd of squealing four-year-olds heading out for adventure. He high-fived our grandson, laughed at the antics of his friends, stopped a few potential fights, and had a grand time.

Sabba reported that the highlight of the trip was an animal show, which featured, among other things, a giant snake that was draped enthusiastically over the shrieking children like a very large, very slimy scarf. Sabba came home and said, simply: "There was a snake." I did not ask follow-up questions.

SWINGING AND ROCKING

I, on the other hand, picked up our two-year-old granddaughter from pre-preschool. When I arrived, a teeny pair of pink socks was hanging on her hat hook. They were not hers. She was certain they were. She insisted I put them on immediately, right there in the hallway. I did. Somewhere, a little girl is going home sockless. I hope her mother doesn't flip.

We went to the park, ate ices on a bench, and headed to the swings. She wouldn't accept any help climbing onto the swing. She is two. She slipped off four times. On the fifth try she made it, and looked at me with the triumphant expression of someone who has just conquered Everest. I cheered like she had.

Then we went back home to rest. I rocked her in my arms as her head nodded back and forth, and I hummed the melody I had hummed to her mother thirty years ago - a melody I thought I had forgotten - until she fell asleep in my lap.

And I realized something.

DISCOVERING THE FOUNTAIN OF YOUTH

The Fountain of Youth isn't about looking young. It's about participating in the world of the young.

Grandparents who are involved with their grandchildren have a second chance at life. You think you're finished with preschool trips. Then suddenly you're on one. You think your days of discussing snacks, playgrounds, missing socks, and who gets to sit by the window are long behind you. Then grandchildren arrive and hand you a fresh ticket.

As Sabba called out to the kids on the jumping castles, "No pushing. One at a time!", he was suddenly forty-five again, calling out to our own boys as they over-enthusiastically bounded through the jumping castles of our kingdom long ago. The children ignored him completely, just as our boys did thirty years ago. Some things are eternal.

As my two-year-old gently snored in my arms, her warm breath on my cheek, I was in my thirties again, holding her mother - the same blonde curls gently bobbing, the same angelic look on her sleeping face.

THE TREASURE IN OUR REACH

The Fountain of Youth isn't a fairy tale or an impossible treasure. It is right there - as we eat lunch with messy four-year-olds, or try to push a toddler on a swing.

Access to the Fountain is granted when you take the hand of your grandchild, sit him on your lap for a story, or look up at the birds together. When you enter your grandchild's world, your knees may still be achy, but somehow time rewinds to those days, decades ago when you couldn't imagine that your little darlings would soon have little darlings of their own.

Perhaps that is why the explorers never found the Fountain of Youth. They were looking in the wrong places. They searched in hidden valleys and distant mountains. They should have looked in preschools, and beside sandboxes.

They should have looked on a class bus filled with four-year-olds wearing sun hats and carrying sticky juice boxes, or beside a rocking chair where a grandmother is humming an old lullaby to her grandchild. They should have looked for a man in electric blue sneakers refereeing a jumping castle, or a grandmother chasing her grandbaby around the park.

Because that is where time folds in on itself. That is where yesterday and today sit side by side. That is where a seventy-year-old man becomes a young father again for an afternoon, and a white-haired grandmother closes her eyes and remembers when her face was smooth and her hair was still blonde.

Looking into the eyes of our grandchildren, we realize that the years did not take away the sweetest parts of life. In fact, they may have made them even sweeter.

They simply brought them back wearing smaller shoes.