We must struggle in order to grow.
We human beings have enormous difficulty in focusing on the present; were always thinking about what we did, about how we could have done it better, about the consequences of our actions, and about why we didn't act as we should have.
What's the world's greatest lie? the boy asked. It's this: that at a certain point in our lives, we lose control of what's happening to us, and our lives become controlled by fate. That's the world's greatest lie.
And he gave the boy his blessing. The boy could see in his father's gaze a desire to be able, himself, to travel the world—a desire that was still alive, despite his father's having had to bury it, over dozens of years, under the burden of struggling for water to drink, food to eat, and the same place to sleep every night of his life.