“You'll need to suffer to make any real art.”
“The need to be a great artist makes it hard to be an artist. The need to produce a great work of art makes it hard to produce any art at all.”
“Or perhaps in Slytherin, you'll make your real friends. Those cunning folk use any means to achieve their ends.”
“If you can have faith in your real self, you'll suffer less. Be bold about who you really are.”
“There is quite enough sorrow and shame and suffering and baseness in real life, and there is no need for meeting it unnecessarily in fiction.”
“We suffered for our art. You have to suffer for our art as well!”