Air Quality Standards

Famous quotes containing the words air, quality and/or standards:

“The finest workers in stone are not copper or steel tools, but the gentle touches of air and water working at their leisure with a liberal allowance of time.”
—Henry David Thoreau (1817–1862)

“Upon the whole, necessity is something, that exists in the mind, not in objects; nor is it possible for us ever to form the most distant idea of it, consider’d as a quality in bodies. Either we have no idea of necessity, or necessity is nothing but that determination of thought to pass from cause to effects and effects to causes, according to their experienc’d union.”
—David Hume (1711–1776)

“Barbarism is the absence of standards to which appeal can be made.”
—José Ortega Y Gasset (1883–1955)