Once we were young, now we are adult.

The elderly have much experiences, thereof, the young must be humble to learn from their wisdom

The young shall grow, strong in spirit, full of grace.

The spirit never ages. It's stays forever young.

If you fall in love, you feel forever young.

I feel forever young.

You are as young as you think.

If you keep an active life, you stay young.

Be youthful.