“The more we cling to the known, the more fearful we are of the unknown.”

“It is the unknown we fear when we look upon death and darkness, nothing more.”

“The fear of an unknown never resolves, because the unknown expands infinitely outward, leaving you to cling pitifully to any small shelter of the known: a cracker has twelve calories; the skin, when cut, bleeds.”

“Reports that say that something hasn't happened are always interesting to me, because as we know, there are known knowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns- the ones we don't know we don't know.”

“The more comfortable we become with being stupid, the deeper we will wade into the unknown and the more likely we are to make big discoveries”

“And for once, Donald Rumsfeld, in the news at the time over the Iraq war made sense to me: "As we know," he said, famously, "there are known knowns-things we know we know. We also know there are known unknowns-things we know we don't know. But there are also unknown unknowns- things we don't know we don't know.”