A lot of people still maintain genre prejudice. I still meet matrons who tell me kindly that their children enjoyed my books but of course they never… - Ursula K. Le Guin

You want to work spells,' Ogion said presently, striding along. 'You've drawn too much water from that well. Wait. Manhood is patience. Mastery is nine times patience. What is that herb by the path?'
'Strawflower.'
'And that?'
'I don't know.'
'Fourfoil, they call it.' Ogion had halted, the coppershod foot of his staff near the little weed, so Ged looked closely at the plant, and plucked a dry seedpod from it, and finally asked, since Ogion said nothing more, 'What is its use, Master?'
'None I know of.'
Ged kept the seedpod a while as they went on, then tossed it away.
'When you know the fourfoil in all its seasons root and leaf and flower, by sight and scent and seed, then you may learn its true name, knowing its being: which is more than its use. What, after all, is the use of you? or of myself? Is Gont Mountain useful, or the Open Sea?' Ogion went on a half mile or so, and said at last, 'To hear, one must be silent.

To claim power over what you do not understand is not wise, nor is the end of it likely to be good.

a man: who, knowing his whole true self, cannot be used or possessed by any power other than himself, and whose life therefore is lived for life’s sake and never in the service of ruin, or pain, or hatred, or the dark.