Is it by favour or by wrath of Fate?

All substance lives and struggles evermore
Through countless shapes continually at war,
By countless interactions interknit:
If one is born a certain day on earth, 70
All times and forces tended to that birth,
Not all the world could change or hinder it.

I find no hint throughout the Universe
Of good or ill, of blessing or of curse;
I find alone Necessity Supreme; 75
With infinite Mystery, abysmal, dark,
Unlighted ever by the faintest spark
For us the flitting shadows of a dream.

O Brothers of sad lives! they are so brief;
A few short years must bring us all relief: 80
Can we not bear these years of laboring breath?
But if you would not this poor life fulfil,
Lo, you are free to end it when you will,
Without the fear of waking after death.--

The organ-like vibrations of his voice 85
Thrilled through the vaulted aisles and died away;
The yearning of the tones which bade rejoice
Was sad and tender as a requiem lay:
Our shadowy congregation rested still
As brooding on that "End it when you will." 90