Famous quotes containing the words test and/or subjects:
“Whenever a true theory appears, it will be its own evidence. Its test is, that it will explain all phenomena.”
—Ralph Waldo Emerson (1803–1882)
“It is not possible, for a poet, writing in any language, to protect himself from the tragic elements in human life.... [ellipsis in source] Illness, old age, and death—subjects as ancient as humanity—these are the subjects that the poet must speak of very nearly from the first moment that he begins to speak.”
—Louise Bogan (1897–1970)