Knowledge is knowing that we cannot know. Autor: Ralph Waldo Emerson Copy Quote More from Ralph Waldo Emerson “Nothing in nature is exhausted in its first use...In God, every end is converte…” “No book has worth by itself, but by the relation to what you have from many oth…” “The mind of this country, taught to aim at low objects, feeds upon itself.” “The world we live in is but thickened light.”