“Gratitude looks to the past and love to the present; fear, avarice, lust, and ambition look ahead.”
Clive Staples Lewis book The Screwtape Letters
Letter XVI
The Screwtape Letters (1942)

The Screwtape Letters is a Christian apologetic novel by C. S. Lewis and dedicated to J. R. R. Tolkien. It is written in a satirical, epistolary style and while it is fictional in format, the plot and characters are used to address Christian theological issues, primarily those to do with temptation and resistance to it.
“Gratitude looks to the past and love to the present; fear, avarice, lust, and ambition look ahead.”
Clive Staples Lewis book The Screwtape Letters
Letter XVI
The Screwtape Letters (1942)
“Courtship is the time for sowing those seeds which will grow up ten years into domestic hatred.”
Clive Staples Lewis book The Screwtape Letters
Letter XXVI
The Screwtape Letters (1942)
“All mortals tend to turn into the thing they are pretending to be.”
Clive Staples Lewis book The Screwtape Letters
Letter X
The Screwtape Letters (1942)
“There is wishful thinking in Hell as well as on Earth.”
Clive Staples Lewis book The Screwtape Letters
Preface
The Screwtape Letters (1942)
“The humans live in time but our Enemy (God) destines them for eternity.”
Clive Staples Lewis book The Screwtape Letters
Letter XV
The Screwtape Letters (1942)
“There are two equal and opposite errors into which our race can fall about the devils.”
Clive Staples Lewis book The Screwtape Letters
Preface
The Screwtape Letters (1942)
Context: There are two equal and opposite errors into which our race can fall about the devils. One is to disbelieve in their existence. The other is to believe, and to feel an excessive and unhealthy interest in them. They themselves are equally pleased by both errors and hail a materialist or a magician with the same delight.