§ Of Men The Silmarillion

Morgoth had then not long come back into Middle-earth, and his power went not far abroad, and was moreover checked by the sudden coming of great light. There was little peril in the lands and hills; and there new things, devised long ages before in the thought of Yavanna and sown as seed in the dark, came at last to their budding and their bloom. West, North, and South the children of Men spread and wandered, and their joy was the joy of the morning before the dew is dry, when every leaf is green.