“Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.”

“In very different ways, the possibility that the universe is teeming with life, and the opposite possibility that we are totally alone, are equally exciting. Either way, the urge to know more about the universe seems to me irresistible, and I cannot imagine that anybody of truly poetic sensibility could disagree.”

“So death, the most terrifying of ills, is nothing to us, since so long as we exist, death is not with us; but when death comes, then we do not exist. It does not then concern either the living or the dead, since for the former it is not, and the latter are no more.”

“The most terrifying fact about the universe is not that it is hostile but that it is indifferent, but if we can come to terms with this indifference, then our existence as a species can have genuine meaning. However vast the darkness, we must supply our own light.”

“The heresy of heresies was common sense. And what was terrifying was not that they would kill you for thinking otherwise, but that they might be right. For, after all, how do we know that two and two make four? Or that the force of gravity works? Or that the past is unchangeable? If both the past and the external world exist only in the mind, and if the mind itself is controllable-what then?”

“Even when we're with someone we love, we're foolish enough to think of her body and soul as being separate. To stand before the person we love is not the same as loving her true self, for we are only apt to regard her physical beauty as the indispensable mode of her existence. When time and space intervene, it is possible to be deceived by both, but on the other hand, it is equally possible to draw twice as close to her real self.”