Learning foreign languages has always been a personal challenge because it requires a lot of effort and time. Foreign language learning involves acquiring knowledge and skills to communicate verbally and in writing. There are two main ways of learning a foreign language: implicit and explicit. Implicit and explicit language learning differ because implicit methodology involves learning through indirect rules and contextual understanding, while explicit methodology employs formulated rules and direct instruction. These two principal methods could be applied separately or together. This research aims to unravel the inherent mystery of how humans acquire a foreign language most easily and effectively, to accumulate the knowledge necessary for foreign language methodologists to create the most rational methodology for foreign language acquisition.