What does Lincoln mean by saying the wall of a minority is inadmissible

Unanimity is impossible; the rule of a minority as a permanent arrangement, is wholly inadmissible; so that rejecting the majority principle, anarchy, or despotism in some form, is all that is left.

a overment ran by a signle strong leader is also known as multiple things depending on the country and the coutnrys belifs and relgions

president,dictator

if you could provide an excerpt for me to read i could