"Braverly isn't the absence of fear. It's doing something despite being afraid." is on what page in the book of the lightening thief

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.