Correspondence Theory
The correspondence theory holds that truth consists in the correspondence between a statement and the actual state of affairs in the world. In other words, a statement is true if it accurately reflects reality.
Coherence Theory
The coherence theory emphasizes the internal consistency and coherence of a belief system. A statement is considered true if it coheres with the other beliefs and knowledge we hold.
Pragmatic Theory, U veritas
The pragmatic theory focuses on the practical consequences of beliefs. A statement is considered true if it leads to successful or beneficial outcomes in the world.