The overall quantity of nuclear weapons in the world continues to decline slowly.

Science is a capital or fund perpetually reinvested; it accumulates, rolls up, is carried forward by every new man. Every man of science has all the science before him to go upon, to set himself up in business with. What an enormous sum Darwin availed himself of and reinvested! Not so in literature; to every poet, to every artist, it is still the first day of creation, so far as the essentials of his task are concerned. Literature is not so much a fund to be reinvested as it is a crop to be ever new-grown.

How many thorns of human nature - hard, sharp, lifeless protuberances that tear and wound us, narrow prejudices, bristling conceits that repel and disgust us - are arrested developments, calcified tendencies, buds of promise that should have lifted a branch up into the sunny day with fruit; and flowers to delight the heart of men, but now all grown hard, petrified, for want of culture and a congenial soil and climate.

I am in love with this world . . . I have climbed its mountains, roamed its forests, sailed its waters, crossed its deserts, felt the sting of its frosts, the oppression of its heats, the drench of its rains, the fury of its winds, and always have beauty and joy waited upon my goings and comings.

The most precious things of life are near at hand, without money and without price. Each of you has the whole wealth of the universe at your very door. All that I ever had, and still have, may be yours by stretching forth your hand and taking it.

A man can fail many times, but he isn't a failure until he begins to blame somebody else.

You cannot cause disproportionate damage to the environment; you cannot harm neutral states. The court said that the threat or use of nuclear weapons is generally contrary to the international law of armed conflict.