Final answer:
The question of why Francesco's friends do not want to associate with him anymore is not directly addressed in the literature excerpts, but they highlight several reasons why friendships may change or end, such as personal growth, societal pressures, and internal conflicts.
Step-by-step explanation:
The question regarding Francesco's friends not wanting to associate with him anymore isn't explicitly answered in the provided excerpts. However, literature often explores the theme of friendships and their fragility. In the case of Marcus from the first passage, we can infer his decision to stray from the migration and pursue his dreams of a ranch life indicates a self-isolation that can lead to distancing between friends. Cicero's advice in the second passage suggests a cautious approach to friendships, hinting that sometimes friends may not live up to expectations or may be influenced by other factors, such as jealousy or societal pressure. The third passage touches on the concept of friendships changing over time due to different life paths, and the last discusses the loneliness that can accompany significant life events, even with friends present.
It's also important to acknowledge the varying reasons why friendships may dissolve; changes in personal interests, feelings of betrayal, pursuing different life goals, or societal pressures can all affect relationships. In examining these excerpts, it's clear that friendships are complex and can be influenced by a multitude of factors, some highlighted by the authors, including societal norms, personal growth, and internal conflicts.