这句话在哪里看到的？
亚创造好说，“将收获到的经验用于我们的世界”这种意味没见过。

作者（Andrew Blake）本人的资料找不到，只能找到有本叫 JRRT A Beginner's Guide 的, 汉译如果就是这本的话，副标题不知怎么来的。
亚马逊上 JRRT A Beginner's Guide 销量可怜，就一条两星评论。回头看了下豆瓣的评论，也挺糟糕……所以不打算买来求证了。
如果需要其他关于次创造的引文的话，推荐这几行诗句：
...
man, sub-creator, the refracted light
through whom is splintered from a single White
to many hues, and endlessly combined
in living shapes that move from mind to mind.
Though all the crannies of the world we filled
with elves and goblins, though we dared to build
gods and their houses out of dark and light,
and sow the seed of dragons, 'twas our right
...
- Mythopoeia
另有关于 Fantasy 的。
Fantasy (in this sense) is, I think, not a lower but a higher form of Art, indeed the most nearly pure form, and so (when achieved) the most potent.
- On Fairy-Stories