IX. In order that I may be grateful, I must wish to do what my benefactor must have wished in order that he might bestow a benefit. Can anything be more unjust than to bear a grudge against a person who may have trodden upon one's foot in a crowd, or splashed one, or pushed one the way which one did not wish to go? Yet it was by his act that we were injured, and we only refrain from complaining of him, because he did not know what he was doing. The same reason makes it possible for men to do us good without conferring benefits upon us, or to harm us without doing us wrong, because it is intention which distinguishes our friends from our enemies. How many have been saved from service in the army by sickness! Some men have been saved from sharing the fall of their house, by being brought up upon their recognizances to a court of law by their enemies; some have been saved by ship-wreck from falling into the hands of pirates; yet we do not feel grateful to such things, because chance has no feeling of the service it renders, nor are we grateful to our enemy, though his lawsuit, while it harassed and detained us, still saved our lives. Nothing can be a benefit which does not proceed from good will, and which is not meant as such by the giver. If any one does me a service, without knowing it, I am under no obligation to him; should he do so, meaning to injure me, I shall imitate his conduct. X. Let us turn our attention to the first of these. Can you desire me to do anything to express my gratitude to a man who did nothing in order to confer a benefit upon me? Passing on to the next, do you wish me to show my gratitude to such a man, and of my own will to return to him what I received from him against his will? What am I to say of the third, he who, meaning to do an injury, blunders into bestowing a benefit? That you should have wished to confer a benefit upon me is not sufficient to render me grateful; but that you should have wished not to do so is enough to set me free from any obligation to you. A mere wish does not constitute a benefit; and just as the best and heartiest wish is not a benefit when fortune prevents its being carried into effect, neither is what fortune bestows upon us a benefit, unless good wishes preceded it. In order to lay me under an obligation, you must not merely do me a service, but you must do so intentionally.