To use words and phrases in an easygoing manner without scrutinizing them too curiously is not in general a mark of ill-breeding. On the contrary, there is something low-bred in being too precise. But sometimes there is no help for it
Nothing is so well learned as that which is discovered.
There is but one evil, ignorance.
How can you wonder your travels do you no good, when you carry yourself around with you?
I know nothing except the fact of my ignorance.
People learn more on their own rather than being force fed.