Do you remember, the night of the battle on Valentine's ship, when I needed some of your strength?" "Do you need it again now?" Alec said. "Because you can have it." "I always need your strength, Alec," Magnus said, and closed his eyes as their intertwined fingers began to shine, as if between them they held the light of a star.
Cassandra ClareClockwork Prince pg. 298 "Though rather despite myself, I thought him a pretty bit of poison to start with, but I have come around. There is a soul under all that bravado. And he is really alive, one of the most alive people I have ever met. When he feels something, it is as bright and sharp as lightning.
Cassandra Clare