"The first thing he wanted to do was get the lower part of his body out of the bed, but he had never seen this lower part, and could not imagine what it looked like." Metamorphosis and Other Stories

This one is particularly beautiful and profound, straight from the heart. When I first read it, I loved the fact that he needs solitude and time to think about Milena, but then when I read it the second time, something else struck me: when he says his office job is boring, his flat is stupid, but he feels he must not complain about his everyday reality because Milena is part of it too, and the gratefulness he feels for that: this moment which belongs to you: Letters To Milena

"People are liberated from suffering not when they experience this or that fleeting pleasure, but rather when they understand the impermanent nature of all their feelings, and stop craving them. " Sapiens: A Brief History of Humankind

Rationalization may be defined as self-deception by reasoning. Our Inner Conflicts: A Constructive Theory of Neurosis