Thus it appears reasonable to suppose, that it was God’s last end, that there might be a glorious and abundant emanation of his infinite fulness of good ad extra, or without himself; and that the disposition to communicate himself, or diffuse his own fulness, was what moved him to create the world.John Piper published a helpful exposition of Edwards, which includes Edwards' full text.
The last thing I did Saturday night was to read a portion of Spurgeon's Lectures to My Students. And in God's kind providence, this was the very last paragraph I read:
Man cannot be the centre of the theological universe, he is altogether too insignificant a being to occupy such a position, and the scheme of redemption must exist for some other end than that of merely making man happy, or even of making him holy. The salvation of man must surely be first of all for the glory of God; and you have discovered the right form of Christian doctrine when you have found the system that has God in the centre, ruling and controlling according to the good pleasure of his will.