"The man who makes everything that leads to happiness depends upon himself, and not upon other men, has adopted the very best plan for living happily. This is the man of moderation, the man of manly character and of wisdom"

This quote by Plato speaks to the importance of self-reliance and moderation in achieving happiness. He suggests that the best prepare for living happily is to depend on oneself rather than on other individuals. This means that a person need to take duty for their own actions and choices, and not rely on others to make them pleased. Furthermore, Plato emphasizes the importance of small amounts and manly character in achieving happiness. Moderation is essential to preventing excess and keeping balance in life, while manly character is important for establishing strength and knowledge. Eventually, Plato's quote motivates us to take obligation for our own happiness and to pursue small amounts and wisdom in our lives.