Ancient philosophers (Socrates/Plato, Buddhism, Confucius, Al-Ghazali) challenged the world around them

All four ancient philosophers (Socrates/Plato, Buddhism, Confucius, Al-Ghazali) challenged the world around them and attempted to find a new path towards wisdom. Please respond to both prompts below.
(A) Briefly explain what each thinker saw as the primary barrier to true wisdom and how they attempted to overcome those barriers.
(B) Which philosopher do think offers the most relevant response to the barriers to wisdom in our present society? Please explain what you think those barriers are and what the particular path to wisdom prescribed by your chosen philosopher would look like in the modern world