Equivalent Focal Length

Famous quotes containing the words equivalent and/or length:

“In truth, politeness is artificial good humor, it covers the natural want of it, and ends by rendering habitual a substitute nearly equivalent to the real virtue.”
—Thomas Jefferson (1743–1826)

“I have seen some whose consciences, owing undoubtedly to former indulgence, had grown to be as irritable as spoilt children, and at length gave them no peace. They did not know when to swallow their cud, and their lives of course yielded no milk.”
—Henry David Thoreau (1817–1862)