There's The Silver Lining I've Been Looking

Without Cunning, There Is No Innovation. Without Ambition, There Is No Accomplishment.

I Sometimes Find, And I Am Sure You Know The Feeling, That I Simply Have Too Many Thoughts And Memories Crammed Into My Mind. “at These Times, I Use The Pensieve. One Simply Siphons The Excess Thoughts From One’s Mind, Pours Them Into The Basin, And Examines Them At One’s Leisure. It Becomes Easier To Spot Patterns And Links, You Understand, When They Are In This Form.

Books Are Like Mirrors: If A Fool Looks In, You Cannot Expect A Genius To Look Out.

I've Never Wanted To Be A Witch, But An Alchemist, Now That's A Different Matter. To Invent This Wizard World, I've Learned A Ridiculous Amount About Alchemy. Perhaps Much Of It I'll Never Use In The Books, But I Have To Know In Detail What Magic Can And Cannot Do In Order To Set The Parameters And Establish The Stories' Internal Logic.

What Happened Down In The Dungeons Between You And Professor Quirrell Is A Complete Secret, So, Naturally The Whole School Knows.