Here are some quotes by James Mattis:

- "If you haven't read hundreds of books, you are functionally illiterate, and you will be incompetent, because your personal experiences alone aren't broad enough to sustain you."
- "I don’t lose any sleep at night over the potential for failure. I cannot even spell the word."
- "Be polite, be professional, but have a plan to kill everyone you meet."
- "You cannot allow any of your people to avoid the brutal facts. If they start living in a dream world, it’s going to be bad."
- "The most important six inches on the battlefield is between your ears."
- "Demonstrate to the world there is ‘No Better Friend, No Worse Enemy’ than a US Marine."

I hope this helps!