Famous quotes containing the words unknown and/or sister:
“The process of discovery is very simple. An unwearied and systematic application of known laws to nature causes the unknown to reveal themselves.”
—Henry David Thoreau (1817–1862)
“England! awake! awake! awake!
Jerusalem thy sister calls!
Why wilt thou sleep the sleep of death,
And close her from thy ancient walls?”
—William Blake (1757–1827)