The Futility of Solitary Labor

Ecclesiastes 4:7-8

Considering I found also another vanity under the sun:

There is but one, and he hath not a second, no child, no brother, and yet he ceaseth not to labour, neither are his eyes satisfied with riches, neither doth he reflect, saying: For whom do I labour, and defraud my soul of good things? in this also is vanity, and a grievous vexation.