Full Idea
Not only cares and labours but also prayers are useful; God having had these prayers in view before he regulated things.
Gist of Idea
Prayers are useful, because God foresaw them in his great plan
Source
Gottfried Leibniz (The Theodicy [1710], Abridge III)
Book Reference
Leibniz,Gottfried: 'Leibniz Selections', ed/tr. Wiener,Philip P. [Scribners 1951], p.514
A Reaction
Hm. I'm struggling with this one. So I can't skip prayers today, because God has foreseen them and included them in his great plan? Hard to motivate yourself, like starting a game of chess after you've already been declared the winner.