key

“Here’s the key to understanding risk: it’s largely a matter of opinion.”

— Howard Marks

Many a book is like a key to unknown chambers within the castle of one’s own self.

—Franz Kafka

Action is the foundational key to all success.

—Pablo Picasso

I would teach children music, physics, and philosophy; but most importantly music, for the patterns in music and all the arts are the keys to learning.

—Plato