The objectives and various formations of education have long been discussed throughout the world, and no definite answers are given, because it is such a complex debate, involving  religions,  economic bachground and even political interventions. As for me, I agree that fomal education is indeed necessary for most citizens and render us more civilian than before, although in some areas and field, it is rigid to restrain our inmagination.For the reason that formal education has the responsibility not only to provide citizens a place to think freely, but also to impart knowledge and experience and cultivate future doctors, engineerings, laws and leaders for the society, it is destined to be excluded from the totally liberal education. Seeing from the aspects of the whole society and history,  fomal education play such an essential role that modern society may not come into being without it. Just imagine our prihistoric ancestors, who could thnk freely but possessed such little materials that they had to worried about the food and security all the time, it is the formal education system which stores fomer knowledge and experience for the next generation that make today's prosperous world.Admittely, the formal education, indeed,  prevent us from more advanced liberty. Before the discovery of the Theory of  Relativity, students who have learnt that the classical mechanics may  be convinced by his teacher that it is absolutely true in class, which may inhibit the further progress in physics. What is more, nowadays, fomal education seems to stress more on the job seeking of the students and courses vary with the job market changed, subsequently, students are crowded in the so-called "promising" field like economy, laws, or medicie, no matter they are interested in them or not. Thus other aspects of the system of the knowledge falls behind. The ultimate result may be the recession in our mind and soal.Even though there are so many negtive influences brought by the formal education, we still need it in some stage of our growth. For the sense that, without basic knowledge about the nature, the society and ourselves, to think freely is just like to think irrationally and even madly. For example, children should be advised to go to school to learn some elementary things like the basic spelling, reading and mathematic skills with their peers there. In addion, being with one's counterparts is another vital function of fomal education, which may be absent in other forms of education like home-education. In summary, formal education has initiated the modern civilization, for its important function in reserving, imparting and spreading and exchanging knowlege, and when face with its disadvantages in several situations, like the strict regulations in high school or college, we may reach the conclusion that we are to receive formal education to gain the fundamental skills and then, when admitted in a higher form of education,  teachers there may have a resposibility to tell various kinds of aspects of a theory and let the students themselves to judge which is right and which is wrong, thus which they are willing to believe in.