When someone commits suicide he has identified his ego with the physical body. For this reason the longing for the physical body is all the more intense. It seems to him that he is like a hollow tree, like someone who has lost his ego. He then has a continual thirst for himself.
Source: Rudolf Steiner – GA 93a – Foundations of Esotericism – Lecture XII – Berlin, 7th October 1905
Translated by Vera and Judith Compton-Burnett