پرسش بااهمیت را فقط یک کودک می‌تواند طرح کند. درواقع همیشه ساده‌ترین پرسش‌ها بااهمیت‌ترین پرسش‌هاست و پاسخی برای آنها وجود ندارد. پرسش‌هایی که نمی‌توان به آنها پاسخ داد، درست همان چیزی است که محدودیت‌های امکانات بشر را نشان می‌دهد و مرزهای هستی ما را تعیین می‌کند.

In the world of eternal return the weight of unbearable responsibility lies heavy on every move we make. That is why Nietzsche called the idea of eternal return the heaviest of burdens.
If eternal return is the heaviest of burdens, then our lives can stand out against it in all their splendid lightness.
But is heaviness truly deplorable and lightness splendid?
The heaviest of burdens crushes us, we sink beneath it, it pins us to the ground. But in the love poetry of every age, the woman longs to be weighed down by the man's body. The heaviest of burdens is therefore simultaneously an image of life's most intense fulfillment. The heavier the burden, the more real and truthful they become.
Conversely, the absolute absence of a burden causes man to be lighter than air, to soar into the heights, take leave of the earth and his earthly being, and become only half real, his movements as free as they are insignificant.
What then shall we choose? Weight or lightness?
...That is the question. The only certainty is: the lightness/weight opposition is the most mysterious, most ambiguous of all.

The consciousness of my own baseness has done nothing to reconcile me to the baseness of others. Nothing is more repugnant to me than brotherly feelings grounded in the common baseness people see in one another. I have no desire for that slimy brotherhood.

when she looked longer at herself in her new dress, it was she but she living a different life, the life she would have lived if she had stayed in Prague.

To be mortal is the most basic human experience, and yet man has never been able to accept it, grasp it, and behave accordingly. Man doesn't know how to be mortal. And when he dies, he doesn't even know how to be dead.

Man can only be certain about the present moment. But is that quite true either? Can he really know the present? Is he in a position to make any judgment about it? Certainly not. For how can a person with no knowledge of the future understand the meaning of the present? If we do not know what future the present is leading us toward, how can we say whether this present is good or bad, whether it deserves our concurrence, or our suspicion, or our hatred?

During the last two hundred years the blackbird has abandoned the woods to become a city bird. From the planet's viewpoint, the blackbird's invasion of the human world is certainly more important than the Spanish invasion of South America or the return to Palestine of the Jews. A shift in the relationships among the various kinds of creation (fish, birds, humans, plants) is a shift of a higher order than changes in relations among various groups of the same kind. Whether Celts or Slavs inhabit Bohemia, whether Romanians or Russians conquer Bessarabia, is more or less the same to the earth. But when the blackbird betrayed nature to follow humans into the artificial unnatural world, something changed in the organic structure of the planet. And yet no one dares to interpret the last two centuries as the history of the invasion of man's cities by the blackbird. All of us are prisoners of a rigid conception of what is important and what is not, and so we fasten our anxious gaze on the important, while from a hiding place behind our backs the unimportant wages ts guerrilla war, which will end in surreptitiously changing the world and pouncing on us by surprise.