“All the evil in the world, and all the unhappiness, comes from the I-concept.”

The Third Notebook: Part Two
No Longer Human

Aleph (2011)

Source: Letters and Papers from Prison (1967; 1997), Who Stands Fast?, p. 4.
Context: The great masquerade of evil has played havoc with all our ethical concepts. For evil to appear disguised as light, charity, historical necessity or social justice is quite bewildering to anyone brought up on our traditional ethical concepts, while for the Christian who bases his life on the Bible, it merely confirms the fundamental wickedness of evil. The "reasonable" people's failure is obvious. With the best intentions and a naive lack of realism, they think that with a little reason they can bend back into position the framework that has got out of joint. In their lack of vision they want to do justice to all sides, and so the conflicting forces wear them down with nothing achieved. Disappointed by the world's unreasonableness, they see themselves condemned to ineffectiveness; they step aside in resignation or collapse before the stronger party.
Still more pathetic is the total collapse of moral fanaticism. Fanatics think that their single-minded principles qualify them to do battle with the powers of evil; but like a bull they rush at the red cloak instead of the person who is holding it; they exhaust themselves and are beaten. They get entangled in non-essentials and fall into the trap set by cleverer people.

Hay un concepto que es el corruptor y el desatinador de los otros. No hablo del mal cuyo limitado imperio es la ética; hablo del infinito.
"Avatars of the Tortoise"
Variant translations:
One concept corrupts and confuses the others. I am not speaking of the Evil whose limited sphere is ethics; I am speaking of the infinite.
There is a concept that is the corruptor and dazzler of others. I'm not talking about the evil whose limited empire is the ethic; I'm talking about infinity.
There is a concept that is the corrupter and destroyer of all others. I speak not of Evil, whose limited empire is that of ethics; I speak of the infinite.
Discussion (1932)

Source: The "Wind on Fire" Trilogy (2000-2003), Firesong (Book 3), p. 274

[In the Company of the Holy Mother, 115]

NOW interview (2004)
Context: You can't get rid of evil. We can't, and I feel that so intensely. All the idiots that keep coming into the world and wrecking people's lives.
And it is such an abundance of idiocy that you lose courage, okay? That you lose hope — I don't want to lose hope. I get through every day — I'm pretty good — I work. I sleep. I sing. I walk. But, I'm losing hope.

Letter to Bruce Rogers (20 August 1931)

'No conclusion could be more appropriate today.'
"Soft Matter" Nobel lecture (9 December 1991)