“It's emotional warfare telling the people we love, the most, the truth about ourselves.”

Variant: If you can't tell the truth to the people you care about the most, eventually you stop being able to tell the truth to yourself.
Source: City of Ashes

Source: The History of Sexuality, Volume 1: An Introduction

Source: Ordinary Heroes

Rich Dad Poor Dad: What the Rich Teach Their Kids About Money-That the Poor and the Middle Class Do Not!

Source: Second Helpings

Nous nous trompons toujours deux fois sur ceux que nous aimons: d'abord à leur avantage, puis à leur désavantage.
A Happy Death (written 1938), first published as La mort heureuse (1971), as translated by Richard Howard (1972)
Variant: He discovered the cruel paradox by which we always deceive ourselves twice about the people we love — first to their advantage, then to their disadvantage.

Source: Haunted (2005)

Source: My Sister's Keeper