"I'm a big believer in the notion that our greatest potential lies in our darkest parts. To a certain extent it's only in facing those parts of ourselves that we can truly grow, and I think that's true of all of the characters I've played, certainly in the past few years"

Zachary Quinto is suggesting that we all have the possible to grow and establish, but it is only by facing our darkest parts that we can genuinely reach our potential. He believes that this is true of all the characters he has played in recent years, and that by facing their darkest parts, they have had the ability to grow and establish. He is recommending that by facing our own darkness, we can likewise grow and develop, and reach our biggest capacity. He is motivating us to look within ourselves and face our own darkness, in order to reach our complete capacity. He believes that by doing this, we can become the very best variation of ourselves.