The more mental effort he made the clearer he saw that it was undoubtedly so: that he had really forgotten and overlooked one little circumstance in life - that Death would come and end everything, so that it was useless to begin anything, and that there was no help for it, Yes it was terrible but true
The word "souvenir" has, of course, slightly extended itself in meaning until it now denotes almost anything either breakable or useless; but even today, ninety per cent of the items covered by the word are forgettable objects in which cigarettes can be left to go stale.