I believe this thought, of the possibility of death - if calmly realised, and steadily faced would be one of the best possible tests as to our going to any scene of amusement being right or wrong.
Heaven, as conventionally conceived, is a place so inane, so dull, so useless, so miserable that nobody has ever ventured to describe a whole day in heaven, though plenty of people have described a day at the seaside.
If you are mindful of death, it will not come as a surprise-you will not be anxious. You will feel that death is merely like changing clothes. Consequently, at that point you will be able to maintain your calmness of mind.
Cowardice, as distinguished from panic, is almost always simply a lack of ability to suspend the functioning of the imagination. Learning to suspend your imagination and live completely in the very second of the present with no before and no after is the greatest gift a soldier can acquire.