Simone de Beauvoir

Work almost always has a double aspect: it is a bondage, a wearisome drudgery; but it is also a source of interest, a steadying element, a factor that helps to integrate the worker with society. Retirement may be looked upon either as a prolonged holiday or as a rejection, a being thrown on to the scrap-heap.
The Coming of Age
Society cares about the individual only in so far as he is profitable. The young know this. Their anxiety as they enter in upon social life matches the anguish of the old as they are excluded from it.
The Coming of Age
Self-knowledge is no guarantee of happiness, but it is on the side of happiness and can supply the courage to fight for it.
Force of Circumstances
One is not born, but rather becomes, a woman.
The Second Sex
All oppression creates a state of war.
The Second Sex
From the very beginning, existentialism defined itself as a philosophy of ambiguity.
The Ethics of Ambiguity
We must not confuse the present with the past. With regard to the past, no further action is possible. There have been war, plague, scandal, and treason, and there is no way of our preventing their having taken place; the executioner became an executioner and the victim underwent his fate as a victim without us; all that we can do is to reveal it, to integrate it into the human heritage, to raise it to the dignity of the aesthetic existence which bears within itself its finality; but first this history had to occur: it occurred as scandal, revolt, crime, or sacrifice, and we were able to try to save it only because it first offered us a form.
The Ethics of Ambiguity