All I Really Need to Know I Learned in Kindergarten is a collection of essays written by Robert Fulghum regarding the basic rules of life. Feeling like a metaphorical sputtering car (in regards to higher level critical thinking), Fulghum "returned" to the kindergarteners' way of reasoning.
On pages 29-31 of the text, Fulghum tells of a Russian sergeant major (Nicolai Pestretsov) stationed in the South African city of Angola. Soon after his wife had arrived for a visit, the South African military entered Angola. While there, the South Africans killed four Russian soldiers they came upon. The other Russian Soldiers fled, except for one man. Nicolai Pestretsov had stayed behind, next to the dead body of his wife, and was captured.
This story highlights one of Fulghum's basic rules: keep your promises. Nicolai Pestretsov will spend time isolated in prison because he kept his promise: "to love and honor and cherish unto death."