Some people think that they can learn better by themselves than with a teacher. Others think that it is always better to have a teacher. So, do we really require a teacher?
The answer might seem paradoxical so let's see the idea.
Learning is the acquisition of knowledge or skill, which may differ from person to person. People can learn by themselves and from others. Learning can be effective only if a learner can acquire knowledge or skill faster and in a proper way. So, I believe it is a far better idea to have a teacher.
Learning by a teacher is faster and goal oriented. Learning on our own may take longer time and may not head towards the particular direction. If we have whole life to read then we can learn by ourselves but we have limited time to study and also we've to pass the exams so we require teachers. People cannot learn many things if s/he tries him/herself. On the other hand if s/he learns from a teacher; more knowledge can be acquired in a short time. I personally feel that only a brilliant student can study him/herself without guidance of a teacher. Most people require the guidance of a teacher to direct his studies in the desired direction.
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Beyond the invisible (infinity)
"Knowing others is wisdom, knowing yourself is enlightenment."