Let us not envy a certain class of men for their enormous riches; they have paid such an equivalent for them that it would not suit us; they have given for them their peace of mind, their health, their honour, and their conscience; this is rather too dear, and there is nothing to be made out of such a bargain.
 
[N’envions point à une sorte de gens leurs grandes richesses; ils les ont à titre onéreux, et qui ne nous accommoderait point: ils ont mis leur repos, leur santé, leur honneur et leur conscience pour les avoir; cela est trop cher, et il n’y a rien à gagner à un tel marché.]

Jean de La Bruyère (1645-1696) French essayist, moralist

The Characters [Les Caractères], ch. 6 “Of Gifts of Fortune [Des Biens de Fortune],” § 13 (6.13) (1688) [tr. Van Laun (1885)]
    (Source)

One translator suggestions the "certain class of men" refers to the partisans, or tax-farmers: private tax collectors, often of humble origin, who purchased the right to their job, and were notorious for turning tax collection into a profitable profession.

(Source (French)). Alternate translations:

Let us not envy some Men their great Riches; their Burthens would be too heavy for us; we cou'd not Sacrifice, as they do, Health, Quiet, Honour and Conscience, to obtain 'em: 'Tis to pay so dear for them that there is nothing to be got by the Bargain.
[Bullord ed. (1696)]

Let us not envy some Men their great Riches, their burden would be too heavy for us; we cou'd not sacrifice, as they do, Health, Quiet, Honour and Conscience, to obtain 'em: 'Tis to pay so dear for 'em, that there is nothing to be got by the Bargain.
[Curll ed. (1713)]

Let us not envy some Men their accountable Riches; their Burthen would be too heavy for us; we could not sacrifice, as they do, Health, Quiet, Honour and Conscience, to obtain them. It is to pay so dear for them, that the Bargain is a Loss.
[Browne ed. (1752)]

We need not envy certain people their great wealth; they acquired it at a heavy cost, which would not suit us; they staked their rest, their health, their honour and their conscience to acquire it; the price is too high, and there is nothing to be gained by such a bargain.
[tr. Stewart (1970)]