A translation, mainly from this source, of the poem (listen to a reading en français here) by Jean d'Ormesson:

The Train Of My Life

At birth, we get on the train and meet our parents.

It is believed that they will always travel with us.

Yet, at a station, our parents will step off the train, leaving us alone to continue the journey.

As time passes, others step on the train.

And they will be important: our siblings, our friends, our children, even the love of our life.

Many will step off (even possibly the love of our life), and leave a greater or lesser emptiness.

Others will be so discreet that we will not realize they have left their seats.

This trip by train will be full of joys, sorrows, expectations, greetings, goodbyes and farewells.

Success is to have good relations with all passengers provided we give the best of ourselves.

We do not know at which station we will step off.

So let's live happily, love and forgive!

It is important to do so because when we get off the train, we will have to leave only beautiful memories to those who will continue their journey.

Let's be happy with what we have and thank heaven for this fantastic trip.

Also, thank you for being a passenger on my train.

And if I have to step off at the next station, I'm glad I've come a long way with you!

I want to tell everyone who reads this text that I thank you for being in my life and traveling on my train.

Thank you, Phil and Amy, for providing and thank you, Ed, for posting. Very appreciated!