What are some examples with reasoning that support the claim that the Logan family is perseverance and courageous?

Papa talks to his children about the fig tree which has just as much right to grow in the ground as the other, bigger trees, and just keeps on growing, "doing what it's gotta do." For Papa, this philosophy does not excuse excessive cruelty or violence but rather speaks to the necessity of sacrifice. Papa sacrifices his own cotton and puts himself in danger when he starts the fire to save TJ's life. Sacrifices sometimes include doing distasteful things to ensure survival, for example, when Big Ma must force Cassie call Lillian Jean "Miz." But according to Papa's philosophy, self-respect, not necessity, inspires doing what you gotta do. Papa urges his children to be true to themselves, and to do both what they must do to survive and to respect themselves at the same time. The Logans do what is unheard of most blacks doing in the South. They own their own land and they stand up for what they believe in.