The thing that I focus on because I don't think it gets enough attention is that among the world's major powers, there is still a nuclear balance of terror - I'm talking about between the United States and Russia, the United States and China.

Serene, I fold my hands and wait, Nor care for wind, nor tide, nor sea; I rave no more 'gainst time or fate, For lo! my own shall come to me.

Every walk to the woods is a religious rite, every bath in the stream is a saving ordinance. Communion service is at all hours, and the bread and wine are from the heart and marrow of Mother Earth. There are no heretics in Nature's church; all are believers, all are communicants. The beauty of natural religion is that you have it all the time; you do not have to seek it afar off in myths and legends, in catacombs, in garbled texts, in miracles of dead saints or wine-bibbing friars. It is of today; it is now and here; it is everywhere.

The only countries that are outside of [ Nuclear Non-Proliferation Treaty] are Israel, Pakistan, India, and North Korea withdrew in the last few years.

I still find each day too short.

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

We cannot walk through life on mountain peaks.