He's not saying everything one learns is right. But if you foreswore curiosity and learning because it's not a perfect process, you'd never learn anything.

@mordant , true but I lean more towards being curious but not necessary believing anything as absolutely true unless emperically proven, even then there might still be some doubt.
e.g. why would any sane person believe everything their govts tell them about global warming? Some of the scariest words I can imagine would come from govt officials at my door saying "we're here to help you."
When I see or read about people with blind Faith in anything I'm reminded of Plato who said "the only thing I am certain of is that nothing is certain".