In that time were made those things that afterwards were most renowned of all the works of the Elves. For… — J. R. R. Tolkien

In that time were made those things that afterwards were most renowned of all the works of the Elves. For Fëanor, being come to his full might, was filled a new thought, or it may be that some shadow of foreknowledge came to him of the doom that drew near; and he pondered how the light of the Trees, the glory of the Blessed Realm, might be preserved imperishable. Then he began a long and secret labour, and he summoned all his lore, and his power, and his subtle skill; and at the end of all he made the Silmarils.

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