[It was] a lot of fun and we were so absorbed trying to do a good job that we didn’t think of the dangers. Until later on when people were saying, “You were sitting on top of all that hydrogen and oxygen.” Those tanks were right outside, the control room’s right there. I mean now, like up at Plum Brook, the control room for B-2 is like half a mile away. We were fifty feet away.

And as for other men, who worked in tank-rooms full of steam, and in some of which there were open vats near the level of the floor, their peculiar trouble was that they fell into the vats; and when they were fished out, there was never enough of them left to be worth exhibiting,—sometimes they would be overlooked for days, till all but the bones of them had gone out into the world as Durham's Pure Leaf Lard! This contributed to the passing of the Pure Food Act of 1906.

Dam Hetch Hetchy! As well dam for water-tanks the people’s cathedrals and churches, for no holier temple has ever been consecrated by the heart of man.
[Muir was aghast that the Hetch Hetchy Valley in Yosemite was to be flooded by the O'Shaughnessy Dam to provide water for San Francisco. Muir lost this land conservation battle; the dam was completed in 1914.]

I continued to do arithmetic with my father, passing proudly through fractions to decimals. I eventually arrived at the point where so many cows ate so much grass, and tanks filled with water in so many hours I found it quite enthralling.

Partly because of improved technology, partly because of the pressures of inflation, partly from causes few understand or agree about, prices have soared. A Spitfire cost £5000 in 1940. A Tornado Air Defence Fighter costs £14 million today. That is a lot of inflation! And even when all has been said about the greater effectiveness of the latter machine, so that far fewer are needed, there still remains a mighty problem. There tend to be limits to the extent to which numbers can be reduced by superior quality. A ship can only cover a certain amount of ocean, however sophisticated it may be; and the most formidable of tanks can’t do much beyond the limits of its commander’s sight. There is a minimum numerical requirement, and meeting it with equipment capable of taking on the enemy was already, in 1955, a source of worry.

When we build, let us think that we build forever. Let it not be for present delight nor for present use alone. Let it be such work as our descendants will thank us for; and let us think, as we lay stone on stone, that a time is to come when those stones will be held sacred because our hands have touched them, and that men will say, as they look upon the labor and wrought substance of them, “See! This our father did for us.”

Wilderness is an anchor to windward. Knowing it is there, we can also know that we are still a rich nation, tending our resources as we should—not a people in despair searching every last nook and cranny of our land for a board of lumber, a barrel of oil, a blade of grass, or a tank of water.