We Must Cultivate Our Garden

Pangloss sometimes would say to Candide: “All events are linked together in this the best of all possible worlds; for, after all, had you not been kicked out of a fine castle for the love of Miss Cunegonde; had you not been put into the Inquisition; had you not traveled across America on foot; had you not stabbed the Baron through the body with your sword; and had you not lost all your sheep which you brought from the good country of El Dorado; -- you would not be here eating preserved citrons and pistachio nuts.” 

“Excellently observed,” answered Candide; “we must cultivate our garden.” 

                                                               -- Candide by Voltaire 1793