Quotations sources? For any literary types?

Cross posted from the lounge.

Google hasn't been any help on these.

I want to be able to give attribution and not just put "unknown" as the source.

"First comes courage in the face of fear. Then when she sees she can overcome anything if she just believes in herself it will be as easy and natural as breathing."

"Be kinder than necessary; everyone you meet is fighting some kind of battle."