Something

No one who has not studied philosophy and who is not entirely pure at the time of his departure is allowed to enter the company of the Gods, but the lover of knowledge only.

For after death, as they say, the genius of each individual, to whom he belonged in life, leads him to a certain place in which the dead are gathered together, whence after judgement has been given they pass into the world below, following the guide, who is appointed to conduct them from this world to the other; and when they have there received their due and remained their time, another guide brings them back again after many revolutions of ages.  Now this way to the other world is not, as Aeschylus says in the Telephus, a single and straight path-if that were so no guide would be needed, for no one could miss it; but there are many partings of the road, and windings, as I infer from the rites and sacrifices which are offered to the gods below in places where there ways meet on earth.  The wise and orderly soul follows in the straight path and is conscious of her surroundings; but the soul which desires the body, and which, as I was relating before, has long been fluttering about the lifeless frame and the world of sight, is after many struggles and many sufferings hardly and with violence carried away by her attendant genius, and when she arrives at the place where the other souls are fathered, if she be impure and have done impure deeds, whether foul murders or other crimes which are the brothers of these, and the works of brothers in crime- from that soul every one flees and turns away; no one will be her companion, no one her guide, but alone she wanders in extremity of evil until certain times are fulfilled, and when the are fulfilled, she is borne irresistibly to her own fitting habitation; as every pure and just soul which has passed through life in the company and under the guidance of the gods has also her own proper home.

Now the earth has divers wonderful regions, and is indeed in nature and extent very unlike the notions of the geographers, as I believe on the authority of one who shall be nameless.

Plato 424-348 B.C.