The invariable mark of wisdom is to see the miraculous in the common.
A wise man gets more use from his enemies than a fool from his friends.
The only true wisdom is in knowing you know nothing.
Wisdom is not a product of schooling but of the lifelong attempt to acquire it.
The only way to do great work is to love what you do.
The more I read, the more I acquire, the more certain I am that I know nothing.
The wise man does at once what the fool does finally.
The fool doth think he is wise, but the wise man knows himself to be a fool.
To acquire knowledge, one must study; but to acquire wisdom, one must observe.
The only limit to our realization of tomorrow will be our doubts of today.
In the end, it's not the years in your life that count. It's the life in your years.