And this, Cebes, is the reason why the true lovers of knowledge are temperate and brave; and not for the reason that the world gives. For not in that way does the soul of a philosopher reason.... Never fear, Simmias and Cebes, that a soul which has been thus nurtured and has had these pursuits, will at her departure from the body be scattered and blown away by the winds and be nowhere and nothing.

Plato - Phaedo