Luther

Work you should and must, but do not ascribe the fact that you have food to eat and that your house is furnished to your work, but to God’s grace and blessing alone. For where it is ascribed to a man’s own work, covetousness and worry immediately raise their heads and the thought that much work will mean many possessions. Hence the strange contradiction occurs that some, who work extremely hard, have scarcely enough to eat, while others who work leisurely are blessed with all good things.—Exposition of Psalm cxxvi