His joy was somewhat sullied by immediate awareness that his brother did not fully share it . . . in truth, he seemed more distressed than was possible save in one about to discorporate because of some shameful lack or failure. But Smith had already learned that these creatures, so much like himself in some ways, could endure emotions dreadful to contemplate and still not die. His Brother Mahmoud underwent a spiritual agony five times daily and not only did not die but had urged the agony on him as a needful thing. His Brother Captain van Tromp suffered terrifying spasms unpredictably, any one of which should have, by Smith’s standards, produced immediate discorporation to end the conflict—yet that brother was still corporate so far as he knew.

Robert A. Heinlein

Robert A. Heinlein