“(As human beings) We see everything everything in a glass, darkly. Sometimes we can peer through the glass and catch a glimpse of what is on the other side. If we were to polish the glass clean, we'd see much more. But then we would no longer see ourselves.”

“I believe there is something of the divine mystery in everything that exists. We can see it sparkle in a sunflower or a poppy. We sense more of the unfathomable mystery in a butterfly that flutters from a twig--or in a goldfish swimming in a bowl. But we are closest to God in our own soul. Only there can we become one with the greatest mystery of life. In truth, at very rare moments we can experience that we ourselves are that divine mystery.”

“Nevertheless we are free individuals, and this freedom condemns us to make choices throughout our lives. There are no eternal values or norms we can adhere to, which makes our choices even more significant. Because we are totally responsible for everything we do. Sartre emphasized that man must never disclaim the responsibility for his actions. Nor can we avoid the responsibility of making our own choices on the grounds that we "must" go to work, or we "must" live up to certain middle-class expectations regarding how we should live. Those who thus slip into the anonymous masses will never be other than members of the impersonal flock, having fled from themselves into self-deception. On the other hand our freedom obliges us to make something of ourselves, to live "authentically" or "truly".”

“Maybe we can comprehend a flower or an insect, but we can never comprehend ourselves. Even less can we expect to comprehend the universe.”

“We can be hindered in our development and our personal growth by political conditions. Outer circumstances can constrain us. Only when we are free to develop our innate abilities can we live as free beings. But we are just as much determined by inner potential and outer opportunities as the Stone Age boy on the Rhine, the lion in Africa, or the apple tree in the garden.”

“When we gaze at a star in the Milky Way which is 50,000 light-years away from our sun, we are looking back 50,000 years in time.""The idea is much too big for my little head.""The only way we can look out into space, then, is to look back in time. We can never know what the universe is like now. We only know what it was like then. When we look up at a star that is thousands of light-years away, we are really traveling thousands of years back in the history of space.”

“When we sense something, it is due to the movement of atoms in space. When I see the moon it is because "moon atoms" penetrate my eye.”