“We shall see that there is great reason to hope that death is a good, for one of two things: either death is a state of nothingness and utter unconsciousness, or, as men say, there is a change and a migration of the soul from this world to another. Now if you suppose there is no consciousness, but a sleep like the sleep of him who is undisturbed even by the site of dreams, death will be an unspeakable gain. For if a person were to select the night in which his sleep was undisturbed even by dreams, and were to compare with this the other days and nights of his life, and then were to tell us how many days and nights he had passed in the course of his life better and more pleasantly than this one, I think that any man, I will not say a private man, but even the great king, will not find many such days or nights, when compared with the others. Now, if death is like this, I say that to die is gain; for eternity is then only a single night. But if death is the journey to another place, and there, as men say, all the dead are, what good, O friends and judges, can be greater than this? …Above all, I shall be able to continue my search into true and false knowledge; as in this world, so also in that; I shall find out who is wise, and who pretends to be wise, and is not. …What infinite delight would there be in conversing with them and asking them questions! For in that world they would not put a man to death for this; certainly not. For besides being happier in that world than in this, they will be immortal, if what is said is true.”

40c–41c
Plato, Apology