This quote by Sophocles talks to the idea that knowledge is the most fundamental part of accomplishing real joy. He suggests that without knowledge, joy is fleeting and insufficient. Knowledge is the crucial to understanding the world around us and making choices that will result in a more fulfilling life. It is the understanding that comes from experience and reflection, and it is the capability to believe seriously and make sensible choices. Wisdom is the structure of a life of contentment and happiness. Without it, we are unable to maximize our lives and find true happiness. Wisdom is the crucial to opening the door to a life of real joy.
"Raising children is an incredibly hard and risky business in which no cumulative wisdom is gained: each generation repeats the mistakes the previous one made"
"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"