Philo Judaeus De Migratione Abrahami 189

[189] Do ye therefore, dwelling among these things, remain tranquil and quiet, and investigate with all the exactness in your power the nature of each, and when you have learnt what there is good and bad in each part, avoid the one and choose the other. And when you have thoroughly and perfectly considered the whole of your own habitation, and have understood what relative importance each of its parts possesses, then rouse yourselves up and seek to accomplish a migration from hence, which shall announce to you, not death, but immortality;