“nothing that is worth knowing can be taught”

“Education is an admirable thing, but it is well to remember from time to time that nothing that is worth knowing can be taught.”

“I am but too conscious of the fact that we are born in an age when only the dull are treated seriously, and I live in terror of not being misunderstood. Don't degrade me into the position of giving you useful information. Education is an admirable thing, but it is well to remember from time to time that nothing that is worth knowing can be taught.”

“To tell people what to read is, as a rule, either useless or harmful; for the appreciation of literature is a question of temperament not of teaching; to Parnassus there is no primer and nothing that one can learn is ever worth learning.”

“nothing is worth doing except what the world says is impossible.”

“The public have an insatiable curiosity to know everything, except what is worth knowing.”

“She...can talk brillantly upon any subject provided she knows nothing about it.”