Theodore Roosevelt's quote recommends that wisdom is not only about having knowledge, but also about knowing when to utilize it. It indicates that having knowledge is just a little part of being sensible, and that most of knowledge comes from knowing when to use it. This might indicate that knowledge has to do with being able to acknowledge the correct time to act, or the right time to speak. It might likewise indicate that wisdom has to do with having the ability to recognize when something is not the right time to act or speak. In either case, Roosevelt's quote recommends that knowledge is about being able to recognize the right time to utilize knowledge. This might be in terms of making choices, or in regards to speaking up or staying silent. In any case, Roosevelt's quote suggests that knowledge has to do with having the ability to acknowledge the right time to utilize understanding.
"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"