"The Christian, while in the world, is not to be of the world. He should be distinguished from it in the great object of his life. To him, 'to live', should be 'Christ'. Whether he eats, or drinks, or whatever he does, he should do all to God's glory. You may lay up treasure; but lay it up in heaven, where neither moth nor rust doth corrupt, where thieves break not through nor steal. You may strive to be rich; but be it your ambition to be 'rich in faith', and good works. You may have pleasure; but while you are merry, sing psalms and make melody in your hearts to the Lord. In your spirit, as well as in your aim, you should differ from the the world. Waiting humbly before God, always conscious of His presence, delighting in communion with Him, and seeking to know His will, you will prove that you are of heavenly race."
~ Charles H. Spurgeon