I think I have seen in Plutarch' (who of all the authors I know, is he who has best mixed art with nature, and judgment with knowledge), his giving as a reason for the, rising of the stomach in those who are at sea, that it is occasioned by fear; having first found out some reason by which he proves that fear may produce such an effect.
Plutarkoren baitan (ezagutzen ditudan autore guztietarik artean naturarekin eta adimena jakintzarekin hobekien nahasi duena baita) uste dut ikusi dudala, itsasoz bidaiatzen dutenei gertatzen zaien urdaileko nahasmenaren kausa azaltzen, hori beldurretik datorkiela, arrazoi zerbait aurkiturik nondik eta frogatzen baitu beldurrak halako ondorioa sor dezakeela.