It is in the thick of a calamity that one gets hardened to the truth—in other words, to silence. (p. 116)
His face still in shadow, Rieux said that he'd already answered: that if he believed in an all-powerful God he would cease curing the sick and leave that to Him. But no one in the world believed in a God of that sort; no, not even Paneloux, who believed that he believed in such a God. And this was proved by the fact that no one ever threw himself on Providence completely. Anyhow, in this respect Rieux believed himself to be on the right road—in fighting against creation as he found it.
"Ah," Tarrou remarked. "So that's the idea you have of your profession?"
"More or less." The doctor came back into the light. (p. 127)
[T]he narrator is inclined to think that by attributing overimportance to praiseworthy actions one may, by implication, be paying homage to the worse side of human nature. For this attitude implies that such actions shine out as rare exceptions, while callousness and apathy are the general rule. The narrator does not share this view. The evil that is in the world always comes from ignorance, and good intentions may do as much harm as malevolence, if they lack understanding. On the whole, men are more good than bad; that, however isn't the real point. But they are more or less ignorant, and it is this that we call vice or virtue; the most incorrigible vice being that of an ignorance that fancies it knows everything and therefore claims for itself the right to kill. The soul of the murderer is blind; and there can be no true goodness nor true love without the utmost clearsightedness. (p. 131)
"Forgive me, Rambert, only—well, I simply don't know. But stay with us if you want to." A swerve of the car made him break off. Then, looking straight in front of him, he said: "For nothing in the world is it worth turning one's back on what one loves. Yet that is what I'm doing, though why, I do not know." He sank back on the cushion. "That's how it is," he added wearily, "and there's nothing to be done about it. So let's recognize the fact and draw the conclusions."
"Ah," Rieux said, "a man can't cure and know at the same time. So let's cure as quickly as we can. That's the more urgent job." (p. 210)
from The Plague by Camus
"Any philosopher's argument which does not therapeutically treat human suffering is worthless. For just as there is no profit in medicine if it does not expel the diseases of the body, so there is no profit in philosophy either if it does not expel the suffering of the mind." -Epicurus