“There's nothing you can know that isn't known.”
John Lennon
“Who could refrain that had a heart to love and in that heart courage to make love known?”
William Shakespeare
“One that lies three thirds and uses a known truth to pass a thousand nothings with, should be once heard and thrice beaten.”
“Well didst thou speak, Athena's wisest son!/ All that we know is, nothing can be known.”
Lord Byron
“There is nothing so well known as that we should not expect something for nothing - but we all do and call it Hope.”
Edgar Watson Howe
“Man can learn nothing except by going from the known to the unknown.”
Claude Bernard
“A friend is nothing but a known enemy.”
Kurt Cobain