Eating an Elephant
I saw this quote atEating an Elephant, the blog of a History Grad student working through a dissertation. This is a pretty good view of what teaching is like.
"If a doctor, lawyer, or dentist had 40 (0r 400) people in his office at one time, all of whom had different needs, and some of whom didn't want to be there or were causing trouble, and the doctor, lawyer, or dentist, without assistance, had to treat them all with professional excellence for nine months, then he/she might have some conception of the classroom teacher's job." Donald Quinn