Being a teacher is back-breakingly difficult work. It is also extremely important work.
Teaching is probably the most difficult of all current jobs for an AI to manage. If you don't believe that, then you have never truly taught.
It's all complete instinct and intuition, and that's extremely difficult to teach.
Teaching was the hardest work I had ever done, and it remains the hardest work I have done to date.
Student teaching is the hardest job there is.
Being superintendent or the superintendent's chief of staff is important work, but there's no chance it's as difficult as being a teacher, and I hesitate to say that it's as important.
Teaching is hard. It takes years to master the technically demanding work and a lot of effort to do that work well.
It is practically impossible to teach good programming to students that have had a prior exposure to BASIC: as potential programmers they are mentally mutilated beyond hope of regeneration.
The more we try to improve our schools, the heavier the teaching task becomes; and the better our teaching methods the more difficult they are to apply.
Of all the hard jobs around, one of the hardest is being a good teacher.
Effective teaching may be the hardest job there is.
Housework is a breeze. Cooking is a pleasant diversion. Putting up a retaining wall is a lark. But teaching is like climbing a mountain.
The teaching thing, the one where I have to impart my knowledge, is probably what comes the least naturally to me because I'm an absorber of things.
Teaching, real teaching, is - or ought to be - a messy business.
