Who said "I can't let him down."?

This quote is attributed to Spider-Man.

I can't let him down. - Spider-Man

"I can't let him down."

Spider-Man Gratitude

"If you're nothing without the suit, then you shouldn't have it."

"I'm Batman."

"That's the thing about being a friendly neighborhood Spider-Man."

"I'm just your friendly neighborhood Spider-Man."

"Gratitude makes life richer."

"A grateful heart is a happy heart."

"Respect those who came before us."

"Life's greatest treasures are the people we love"