A trifle consoles us, for a trifle distresses us. - Blaise Pascal

When I consider the short duration of my life, swallowed up in the eternity before and after, the small space which I fill, or even can see, engulfed in the infinite immensity of spaces whereof I know nothing, and which know nothing of me, I am terrified, and wonder that I am here rather than there, for there is no reason why here rather than there, or now rather than then. Who has set me here? By whose order and design have this place and time been destined for me?—Memoria hospitis unius diei prætereuntis.
It is not well to be too much at liberty. It is not well to have all we want.
How many kingdoms know nothing of us!
The eternal silence of these infinite spaces alarms me.

Man's grandeur is that he knows himself to be miserable.

"The human being is only a reed, the most feeble in nature; but this is a thinking reed. It isn't necessary for the entire universe to arm itself in order to crush him; a whiff of vapor, a taste of water, suffices to kill him. But when the universe crushes him, the human being becomes still more noble than that which kills him, because he knows that he is dying, and the advantage that the universe has over him. The universe, it does not have a clue.

"All our dignity consists, then, in thought. This is the basis on which we must raise ourselves, and not space and time, which we would not know how to fill. Let us make it our task, then, to think well: here is the principle of morality.