You’re a bit young for this,’ she said, ‘but as you grow older you’ll find most people don’t set foot outside their own heads much. You too,’ she added gnomically.

Anyone with half a mind could see that," said Tiffany.Miss Tick sighed. "Yes. But sometimes it's so hard to find half a mind when you need one.

His progress through life was hampered by his tremendous sense of his own ignorance, a disability which affects all too few.

On the Kite, the situation was being 'workshopped'. This is the means by which people who don't know anything get together to pool their ignorance.

Because the universe was full of ignorance all around and the scientist panned through it like a prospector crouched over a mountain stream, looking for the gold of knowledge among the gravel of unreason, the sand of uncertainty and the little whiskery eight-legged swimming things of superstition.

He stared at his feet. “I’m still very ignorant,” he said, “but at least I’m ignorant about really important things.

Granny sighed. "You have learned something," she said, and thought it safe to insert a touch of sternness into her voice. "They say a little knowledge is a dangerous thing, but it is not one half so bad as a lot of ignorance.