Who said "The journey matters more than the destination."?

This quote is attributed to Grover Underwood.

The journey matters more than the destination. - Grover Underwood

"The journey matters more than the destination."

Grover Underwood Adventure

Character in Percy Jackson: The Lightning Thief

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"I'm sorry. I should have been there. I should have protected you."

"I can't believe you're a real demigod. You're like... incredible!"

"Monsters don't sleep. They hunt. That's what they do."

"The real magic is in your friends."

"The greatest adventure is life itself."

"The adventure of life begins with a single step."

"Adventure finds you when you stop running."

"Fortune and glory, kid."