“To be alive is to feel the joy of being./ In spite of the sorrows and joys of life/ The primary joy is that of being./ That of my existence. / That I exist is the most fundamental experience is joy for me!/ I, who do not deserve to, really exist./ I, who need not, do exist!/ I, who may not, do exist.”

"We Three" Ch. 11 : Union
The Essential Rumi (1995)

Source: Hardboiled Wonderland and the End of the World (1985), Chapter 32, Shadow in the Throes of Death
Source: Hard-Boiled Wonderland and the End of the World
Context: First, about the mind. You tell me there is no fighting or hatred or desire in the Town. That this is a beautiful dream, and I do want your happiness. But the absence of fighting or hatred or desire also means the opposites do not exist either. No joy, no communion, no love. Only where there is disillusionment and depression and sorrow does happiness arise; without the despair of loss, there is no hope.

Source: Illusions: The Adventures of a Reluctant Messiah

Schließlich brauchen sie uns nicht mehr, die Früheentrückten,
man entwöhnt sich des Irdischen sanft, wie man den Brüsten
milde der Mutter entwächst. Aber wir, die so große
Geheimnisse brauchen, denen aus Trauer so oft
seliger Fortschritt entspringt –: könnten wir sein ohne sie?
First Elegy (as translated by Stephen Mitchell)
Duino Elegies (1922)

Source: Strength to Love

Original: La vita di qualcuno, la rendi felice dicendogli sinceramente "ti amo", "mi manchi", dedicandogli attenzioni e trasmettendogli la gioia che provi ogni giorno... per la sua esistenza.
Source: prevale.net

Source: Atlas Shrugged

Source: The Days of Abandonment

"The Abyss," l. 100
The Far Field (1964)