Confucius said, "To know that we know what we know, and that we do not know what we do not know, that is true knowledge.

Explore your higher latitudes . . . be a Columbus to whole new continents and worlds within you, open new channels, not of trade but of thought.

We do not enjoy poetry unless we know it to be poetry.

Writing may be either the record of a deed or a deed. It is nobler when it is a deed.

When I read some of the rules for speaking and writing the English language correctly, I think any fool can make a rule, and every fool will mind it.

How about 'Walden'?