How does it happen that all these statisticians, sages, and lovers of mankind, in calculating human profits, consistently omit one profit?

Notes from Underground, Fyodor Dostoevsy (translation by Pevear & Volkhonsky)

Ask the questions that have no answers.
Invest in the millennium. Plant sequoias.
Say that your main crop is the forest
that you did not plant,
that you will not live to harvest.
Say that the leaves are harvested
when they have rotted into the mold.
Call that profit. Prophesy such returns.

Manifesto: The Mad Farmer Liberation Front, Wendell Berry