The five original nuclear weapon states I mentioned - U.S., Britain, France, China, and Russia - under the NPT have committed to the achievement of the elimination of their nuclear arsenals through good faith negotiations of nuclear disarmament - that's Article Six of the treaty.

Do not despise your own place and hour. Every place is under the stars, every place is the center of the world.

Literature is an investment of genius which pays dividends to all subsequent times.

Oh, Spring is surely coming, Her couriers fill the air; Each morn are new arrivals, Each night her ways prepare; I scent her fragrant garments, Her foot is on the stair.

I seldom go into a natural history museum without feeling as if I were attending a funeral.

We have produced some good walkers and saunterers, and some noted climbers; but as a staple recreation, as a daily practice, the mass of the people dislike and despise walking.

To the scientist Nature is a storehouse of facts, laws, processes; to the artist she is a storehouse of pictures; to the poet she is a storehouse of images, fancies, a source of inspiration; to the moralist she is a storehouse of precepts and parables; to all she may be a source of knowledge and joy.