Ambition is the immoderate desire of power.
Part III, Proposition XLIV
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To achieve anything you must first have ambition and then talent, knowledge, and finally the opportunity.
There is one weakness in people for which there is no remedy. It is the universal weakness of lack of ambition!
The very substance of the ambitious is merely the shadow of a dream.
On the Improvement of the Understanding
In Praise of Idleness and Other Essays
The Myth of Sisyphus
Zorba the Greek
Manual of the Warrior of Light
The Phenomenology of Spirit
Beyond Good and Evil