Man, is neither a stone nor a plant and he cannot complacently justify himself by his mere presence in the world. Man is man only by his refusal to remain passive, by the drive which projects him from the present towards the future and directs him towards things for the purpose of dominating and shaping them. For man, to exist means to remake existence. To live is the will to live.
The Ethics of Ambiguity: Simone de Beavoir 1947