In this quote, Plato is highlighting the significance of wisdom in the pursuit of understanding. He is suggesting that wisdom is the foundation upon which all other sciences are constructed. He is implying that without wisdom, the pursuit of knowledge is futile. Knowledge is the capability to believe critically and make sound decisions based upon knowledge and experience. It is the capability to recognize between ideal and incorrect, and to make decisions that are advantageous to oneself and to society. Plato is recommending that knowledge is the key to opening the secrets of deep space and to understanding the complexities of life. He is emphasizing that wisdom is the foundation of all other sciences, which without it, the pursuit of knowledge is insufficient.
"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"