Kafka's parable reads as follows:
He has two antagonists: the first presses him from behind, from the origin. The second blocks the road ahead. He gives battle to both. To be sure, the first supports him in his fight with the second, for he wants to push him forward, and in the same way the second supports him in his fight with the first, since he drives him back. But it is only theoretically so. For it is not only the two antagonists who are there, but he himself as well, and who really knows his intentions? His dream, though, is that some time in an unguarded moment - and this would require a night darker than any night has ever been yet - he will jump out of the fighting line and be promoted, on account of his experience in fighting, to the position of umpire over his antagonists in their fight with each other.
I think that, as life is action and passion, it is required of a man that he should share the passion and action of his time at peril of being judged not to have lived.
Bring me my boots and shoes
You can hang back or fight your best on the front line
Sing a little bit of these workingman’s blues
That is what I suggest, too!
(4) - https://www.britannica.com/biography/Oliver-Wendell-Holmes-Jr