GINNY
Albus is different and isn’t that a good thing. And he can tell – you know – when you’re putting on your Harry Potter front. He wants to see the real you.

HARRY
‘The truth is a beautiful and terrible thing, and should therefore be treated with great caution.’
GINNY looks at him, surprised.
Dumbledore.

GINNY
A strange thing to say to a child.

HARRY
Not when you believe that child will have to die to save the world.

Harry Potter and the Cursed Child - Chapter 1 :
See this quote in the Pensive -