This quote is not from "The Lightning Thief" by Rick Riordan. It is a different quote about bravery and fear.
then what is the other quote and where can i find it in the book
I'm sorry, but without the specific quote, I am unable to provide information on where it might be located in "The Lightning Thief." If you can provide more context or details about the quote, I can try to help you locate it within the book.