It absolutely follows from my doctrine, that every being is its own work. Nature, which is incapable of falsehood and is as native as genius, asserts the same thing downright; since each being merely kindles the spark of life at another exactly similar being, and then makes itself before our eyes, taking the materials for this from outside, form and movement from its own self; this process we call growth and development. Thus, even empirically each being stands before us as its own work. But Nature’s language is not understood because it is too simple.
A. Schopenhauer’s Fourfold Root of the Principle of Sufficient Reason