1. Balzac: Adverse luck is the touchstone of character;
2. Aristotle: Pity is caused by a person suffering misfortune, fear is caused by the misfortune suffered by a person. Caused by people being similar to us;
3. Beethoven: One of the great advantages of outstanding people is that they are persevering in adverse and difficult encounters;
4. Emerson Health: Every setback or unfavorable mutation carries the same or greater beneficial seeds;
5. Byron: Disaster is the first journey of truth.