When we examine the acts of an individual, we shall find them compulsory. He is compelled to do them and has no freedom of choice. In a sense, he is like a stew cooking on a stove; it has no choice but to cook. And it must cook because Providence has harnessed life with two chains: pleasure and pain (...) there is no difference here between man and animal. And if that is the case, there is no free choice whatsoever, but a pulling force, drawing them toward any bypassing pleasure and rejecting them from painful circumstances. And Providence leads them to every place it chooses by means of these two forces [i.e. pleasure and pain], without asking their opinion in the matter.