I fondly remember a song written by singer/songwriter Jim Croce, titled "Time in a Bottle." Croce wrote the lyrics after his wife Ingrid told him she was pregnant, in December 1970. The couple had been married for five years and Ingrid recalls a mix of terror and delight in Jim's reaction when she told him the news.

The lyrics of this beautiful love song: 

If I could save time in a bottle

The first thing that I'd like to do

Is to save every day till eternity passes away

Just to spend them with you.

If I could make days last forever

If words could make wishes come true

I'd save every day like a treasure and then

Again, I would spend them with you.

But there never seems to be enough time

To do the things you want to do, once you find them

I've looked around enough to know

That you're the one I want to go through time with.

If I had a box just for wishes

And dreams that had never come true

The box would be empty, except for the memory of how

They were answered by you.

I love the metaphor of putting 'time in a bottle,' as if you could suspend a moment and treasure it forever.  Are there not many times in life that we have an experience that we wish could go on forever?  But that is why we are able to keep fond memories in our hearts.