An earthquake in a dream tends to shake something foundational -- a belief, relationship, or sense of security you assumed was solid ground. The dream rarely warns of literal disaster; it more often names a fear that something structural in your life is less stable than you've been letting yourself admit.
He that would truly promote Art must insist as much on the confutation of false opinions delivered by others, as in the declaration or truth. - Cardan Girolamo (1501-1576)