"...and Yavanna returned to Aulë; and he was in his smithy, pouring molten metal into a mould. 'Eru is bountiful,' she said. 'Now let thy children beware! For there shall walk a power in the forests whose wrath they will arouse at their peril.' 'Nonetheless they will have need of wood,' said Aulë, and he went on with his smith-work. “ - Of Aulë and Yavanna