There are three principal means of acquiring knowledge available to us: observation of nature, reflection, and experimentation. Observation collects … - Denis Diderot

Whether God exists or does not exist, He has come to rank among the most sublime and useless truths.

As I listened to him describing the scene of the procurer seducing the young girl, I found myself torn between two conflicting emotions, between a powerful desire to laugh and an overwhelming surge of indignation. I was in agony. Again and again a roar of laughter prevented my rage bursting forth; again and again the rage rising in my heart became a roar of laughter. I was dumbfounded by such shrewdness and such depravity; by such soundness of ideas alternating with such falseness; by so general a perversity of feeling, so total a corruption, and so exceptional a candour. He saw how agitated I was. 'What's the matter?' he asked.

ME: Nothing.
HIM: I think you're upset.
ME: Indeed I am.
HIM: So what do you think I should do?
ME: Talk about something else. What a wretched fate, to have been born and to have fallen so low!
HIM: I agree. But don't let my state affect you too much. In opening my heart to you, it was not my intention to upset you. I've managed to save a little, while I was with those people. Remember I wanted for nothing, nothing whatsoever, and they also made me a small allowance for incidentals. [Here he began to strike himself on the forehead with his fist, bite his lips, and roll his eyes like a lunatic, then he said:] What's done is done. I've put a bit aside. Time's passed, so I'm that much to the good.
ME: You mean to the bad.
HIM: No, to the good. Live one day less, or have an ecu more, it's all the same. The important thing is to open your bowels easily, freely, enjoyably, copiously, every evening; 'o stercus pretiosum!' That's the grand outcome of life in every condition. At the final moment, we're all equally rich - Samuel Bernard who by dint of theft, pillage, and bankruptcy leaves twenty-seven millions in gold, and Rameau who'll leave nothing, Rameau for whom charity will provide the winding-sheet to wrap him in.

Niczego równie trudno nie przebacza się komuś, co jego zalet.