I love challenges, I love intensity, and I also like to challenge my mind. Believe it or not, boxing is not only about physical force. You use a lot of concentration; it's really mental.
Auberon Herbert
Do you not see, first, that - as a mental abstract - physical force is directly opposed to morality; and secondly, that it practically drives out of existence the moral forces?
Ayn Rand
Potentially, a government is the most dangerous threat to man's rights: it holds a legal monopoly on the use of physical force against legally disarmed victims.
H. P. Lovecraft
The sole ultimate factor in human decisions is physical force. This we must learn, however repugnant the idea may seem, if we are to protect ourselves and our institutions. Reliance on anything else is fallacious and ruinous.