No one thinks he will escape death, so there is no disappointment and, as long as we know neither the when nor the how, the mere fact that we shall one day have to go does not much affect us; we do not care, even though we know vaguely that we have not long to live. The serious trouble begins when death becomes definite in time and shape.
 Samuel Butler, The Note-Books of Samuel Butler (1912). copy citation

Context

“If, then, a man may be a Christian while believing himself hostile to all that some consider most essential in Christianity, may he not also be a free-thinker (in the common use of the word) while believing himself hostile to free-thought? p. 353XXIII Death Fore-knowledge of Death No one thinks he will escape death, so there is no disappointment and, as long as we know neither the when nor the how, the mere fact that we shall one day have to go does not much affect us; we do not care, even though we know vaguely that we have not long to live. The serious trouble begins when death becomes definite in time and shape. It is in precise fore-knowledge, rather than in sin, that the sting of death is to be found; and such fore-knowledge is generally withheld; though, strangely enough, many would have it if they could.” source