I love any good performs stprys a and of there are any out there that you enjoy reading as well then please don't hesitate to let me know about them. 
Anyways Percy Jackson is by far one of the best book series out there. 

Motto 1:
Look strong when you are weak, 
Look weak when you are strong
Neber surrender
Never back down from your beliefs.

Motto 2: 
the hardest walk you can make is the walk you make alone,
But that is the walk that makes you the strongest.