The fundamental theme of the Basilidian system is the question concerning the origin of evil and how to overcome it.[3] A cosmographical feature common to many forms of Gnosticism is the idea that the Logos Spermatikos is scattered into the sensible cosmos, where it is the duty of the Gnostics, by whatever means, to recollect these scattered seed-members of the Logos and return them to their proper places[4] (cf. the Gospel of Eve). "Their whole system," says Clement, "is a confusion of the Panspermia (All-seed) with the Phylokrinesis (Difference-in-kind) and the return of things thus confused to their own places."