“The worst thing is not to commit crimes but, rather, not to accomplish the good that one could have done. It is the sin of omission, which is nothing other than to be unloving, and no one accuses himself of it.”
Youcat English: Youth Catechism of the Catholic Church, Ignatius Press, 2011 https://books.google.com/books?id=soVf9Q1h-esC&pg=PT26&dq=%22The+worst+thing+is+not+to+commit+crimes+but,+rather,+not+to+accomplish+the+good+that+one+could+have+done.%22&hl=en&sa=X&ved=0CB0Q6AEwAGoVChMI3_bSqOH6yAIVwvI-Ch3kOAGF#v=onepage&q=%22The%20worst%20thing%20is%20not%20to%20commit%20crimes%20but%2C%20rather%2C%20not%20to%20accomplish%20the%20good%20that%20one%20could%20have%20done.%22&f=false
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Léon Bloy 22
French writer, poet and essayist 1846–1917Related quotes

“I have committed the worst sin that can be committed. I have not been happy.”
He cometido el peor pecado que uno puede cometer. No he sido feliz.
"El Remordimiento" [Remorse] in La moneda de hierro [The Iron Coin], as quoted in Borges at Eighty : Conversations (1982) edited by Willis Barnstone, also in Hispanic Literature Criticism : Allende to Jiménez (1994), p. 298

“The worst sin any of us can commit is not committing any sin.”
Original: Il peccato peggiore che ognuno di noi possa commettere è non commettere alcun peccato.
Source: prevale.net

Source: Life Together: The Classic Exploration of Christian Community

Canto I, line 131
Hudibras, Part I (1663–1664)
Context: Whatever sceptic could inquire for,
For ev'ry why he had a wherefore;
Knew more than forty of them do,
As far as words and terms cou'd go.
All which he understood by rote
And, as occasion serv'd, would quote;
No matter whether right or wrong,
They might be either said or sung.
His notions fitted things so well,
That which was which he could not tell;
But oftentimes mistook th' one
For th' other, as great clerks have done.

The Thirteenth Revelation, Chapter 36

“people are more than the worst thing they have ever done in their lives”

“Some of the worst crimes against humanity are committed by architecture students.”
Source: The Laundry Files, The Jennifer Morgue (2006), Chapter 1, “Random Ramona” (p. 18)