Introduction.- Brain: Language by, in, through and across the brain.- Dialogue.- Learning: Statistical mechanisms in language acquisition.- Evolution: Language use and the evolution of languages.- Transitions: The evolution of linguistic replicators.- Genes: Interactions with language on three levels.- Language in Nature: On the evolutionary roots of a cultural phenomenon.- Self-Organization: Complex dynamical systems in the evolution of speech.- Environment: Language ecology and language death.- Conclusions. sakriti opis