Who said if men are not natrually in a state of war why do they always carry arms and why do they have keys to lock their doors.?

The quote reflects the ideas of Thomas Hobbes, a 17th-century philosopher known for his social contract theory. In his work "Leviathan," Hobbes argues that in a natural state, humans are in constant conflict, which necessitates the need for self-defense measures, such as carrying arms and locking doors. This perspective highlights the inherent distrust and potential for violence in human nature, emphasizing the importance of a strong central authority to maintain peace and security.