“Men's wishes are not always vain, nor is every life too brief to satisfy its possessor. Only when we attempt, from the point of view permitted by physics and biology, to sum up the possibilities of collective human endeavour, do we fully realise the "vanity of vanities" proclaimed by the Preacher.”

(I.3) Del Rey, p. 75
Blade of Tyshalle (2001)
Context: "I respect what is repectable," Tan'elkoth replied. "To ask for respect where none has been earned is childish maundering. And what is repectable, in the end, save service? Even your idol Jefferson is, in the end, measured by how well he served the species. The prize of individualism--its goal--is self-actualization, which is only another name for vanity. We do not admire men for achieving self-actualization; we admire self-actualization when its end result is a boon to humanity."

1910s, "Law and the Court" (1913)

God Knows (1984)

Source: Tuesdays with Morrie

Cassandra (1860)
Context: By mortifying vanity we do ourselves no good. It is the want of interest in our life which produces it; by filling up that want of interest in our life we can alone remedy it. And, did we even see this, how can we make the difference? How obtain the interest which society declares she does not want, and we cannot want?

On parle peu quand la vanité ne fait pas parler.
Variant translation: We say little when vanity does not make us speak.
Maxim 137.
Reflections; or Sentences and Moral Maxims (1665–1678)

Source: My Years As Prime Minister (2007), Chapter Ten, Power behind the Throne, p. 238

Source: Beyond Good and Evil

Kulturphilosophie (1923), Vol. 2 : Civilization and Ethics
Context: The restoration of our world-view can come only as a result of inexorably truth-loving and recklessly courageous thought. Such thinking alone is mature enough to learn by experience how the rational, when it thinks itself out to a conclusion, passes necessarily over into the non-rational. World- and life-affirmation and ethics are non-rational. They are not justified by any corresponding knowledge of the nature of the world, but are the disposition in which, through the inner compulsion of our will-to-live, we determine our relation to the world.
What the activity of this disposition of ours means in the evolution of the world, we do not know. Nor can we regulate this activity from outside; we must leave entirely to each individual its shaping and its extension. From every point of view, then, world- and life-affirmation and ethics are non-rational, and we must have the courage to admit it.