Cassandra Clare Quotes about Purpose

I'm not unhappy," he said. "Only people with no purpose are unhappy. I've got a purpose.
Cassandra Clare (2011). “Cassandra Clare: The Mortal Instrument Series (4 books): City of Bones; City of Ashes; City of Glass; City of Fallen Angels”, p.163, Simon and Schuster
"City of Bones". Book by Cassandra Clare, March 27, 2007.
Cassandra Clare (2014). “Clockwork Princess”, p.281, Simon and Schuster