There is a difference between aspiration and ambition as they are to be understood on this quest. The two easily get confused with one another. Aspiration tries not to surrender to the ego's tyranny whereas ambition directly strengthens it. I do not refer here to a young man's ambition to make a career for himself. That is another matter and ought to be encouraged.
-- Notebooks Category 2: Overview of Practicies Involved > Chapter 5: Balance the Psyche > # 44