“Logic only tells us what's there; it can't really address what isn't. Even the most devoted empiricist must admit that we have no hope of understanding the universe. Some things are unknowable.”

“...we all must admit that everything is fine and there's no need in the world to worry, and in fact we should realize what it would mean to us to UNDERSTAND that we're not REALLY worried about ANYTHING.”

“We are ultimately unknowable to ourselves and others. Our past and future are mostly unknowable. God is unknowable. For the present the universe - its origins and its destiny - is unknowable, as is whether there are many universes. Infinity is unknowable. These are some of the fundamental reasons why I call myself an agnostic.”

“We live in time, it bounds us and defines us, and time is supposed to measure history, isn't it? But if we can't understand time, can't grasp its mysteries of pace and progress, what chance do we have with history—even our own small, personal, largely undocumented piece of it?”

“To begin to understand the gorgeous fever that is consciousness, we must try to understand the senses and what they can tell us about the ravishing world we have the privilege to inhabit.”

“We're forever teetering on the brink of the unknowable, and trying to understand what can't be understood.”