About Ferdinand de Saussure: Ferdinand de Saussure is widely considered one of the fathers of 20th-century linguistics and one of two major fathers (together with Charles Sanders Peirce) of semiotics/semiology.
Everyone, left to his own devices, forms an idea about what goes on in language which is very far from the truth.
It is only since linguistics has become more aware of its object of study, i.e. perceives the whole extent of it, that it is evident that this science can make a contribution to a range of studies that will be of interest to almost anyone.