2 For of the Greeks some have said that God is the soul of the world: and others that His power reaches only to heaven, and not to earth as well. Some also sharing their error and misusing the text which says, “And Your truth unto the clouds,” have dared to circumscribe God's providence by the clouds and the heaven, and to alienate from God the things on earth; having forgotten the Psalm which says, If I go up into heaven, You are there, if I go down into hell, You are present. For if there is nothing higher than heaven, and if hell is deeper than the earth, He who rules the lower regions reaches the earth also.
Source: Catechetical Lectures (New Advent)