From "The Little Prince" by Antione de Saint-Exupery

And he went back to the fox.
"Good-bye," he said.

"Good-bye,"said the fox. "Here is my secret. It's quite simple: One sees clearly only with the heart. Anything essential is invisible to the eyes."

"Anything essential is invisible to the eyes," the little prince repeated, in order to remember.

"It's the time you spent on your rose that makes your rose so important."

"It's the time I spent on my rose . . . ," the little prince repeated, in order to remember.

"People have forgotten the truth," the fox said. "But you mustn't forget it. You become responsible forever for what you've tamed. You're responsible for your rose . . ."

"I'm responsible for my rose . . . ," the little prince repeated, in order to remember.

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I like this.