Taken from the 17th century Jesuit monk Balthasar Gracian, in his work- The Art of Worldly Wisdom:

Taken from the 17th century Jesuit monk Balthasar Gracian, in his work- The Art of Worldly Wisdom:"Knowledge and courage. These are the elements of greatness. Because they are immortal they bestow immortality. Each is as much as he knows, and the wise can do anything. A person without knowledge is in a world without light. Wisdom and strength are the eyes and hands. Knowledge without courage is sterile."