Plato

“If anyone comes to the gates of poetry and expects to become an adequate poet by acquiring expert knowledge of the subject without the Muses' madness, he will fail, and his self-controlled verses will be eclipsed by the poetry of men who have been driven out of their minds.”
― Plato, Phaedrus

“There is a false saying: “How can someone who can’t save himself save others?” Supposing I have the key to your chains, why should your lock and my lock be the same?”
― Friedrich Nietzsche

“The highest mountain, the oldest books, the strangest people, there you will find the stone.”
― Athanasius Kircher

“I think for anyone to become good at something, they have to fail a lot too. And they have to be completely unafraid to fail or they'll never make it to the next level.”
― Amy Schumer, The Girl with the Lower Back Tattoo