Make a sentence
Carnegie said in The Weakness of Human Nature: If we want to stay safe and happy, don't kick the dog to death.
Kicking a dog to death is a bully and afraid of hard character.
A dead dog refers to the poor in life. They suffered disasters and injuries. If we kick it again, it will add insult to injury. So, don't kick the dog to death.
"Don't kick the dog to death" is a famous saying. Whenever a celebrity, politician or someone is criticized or even maliciously slandered, someone will use this sentence to persuade or comfort them.
"Don't kick the dog to death" means don't hit someone when he's down. One day you may fail yourself.