The world today is more multicultural than ever before and knowing more than one foreign language can benefit you in many ways. First of all, you can become more successful since it can open more job opportunities for you. Second, it can boost your cognitive abilities by improving memory, help with keeping longer attention span, and it can even reduce risk of age-related cognitive decline. Finally and most importantly, you can have a better understanding of different cultures and have a more authentic experience by speaking their language. Now, you just need to choose one to start with, and to help you decide here are the 4 most relevant languages of today.