So that in the nature of man,
we find three principal causes of quarrel:

First, Competition;
Secondly, Dissidence;
Thirdly, Glory.

The first, maketh men invade for Gain;
the second, for Safety;
and the third, for Reputation.

The first use Violence, to make themselves Masters of other men's persons, wives, children and cattle;
the second, to defend them;
the third, for trifles, as a word, a smile, a different opinion, and any other sign of undervalue, either direct in their Persons, or by reflexion in their Kindred, their Friends, their Nation, their Profession, or their Name.

Thomas Hobbes

Thomas Hobbes