Philo Judaeus Quod Omnis Probus Liber Sit 76

[76] These men, in the first place, live in villages, avoiding all cities on account of the habitual lawlessness of those who inhabit them, well knowing that such a moral disease is contracted from associations with wicked men, just as a real disease might be from an impure atmosphere, and that this would stamp an incurable evil on their souls. Of these men, some cultivating the earth, and others devoting themselves to those arts which are the result of peace, benefit both themselves and all those who come in contact with them, not storing up treasures of silver and of gold, nor acquiring vast sections of the earth out of a desire for ample revenues, but providing all things which are requisite for the natural purposes of life;