The history of man is dominated by, and reflects, the amount of available energy

The energy available for each individual man is his income, and the philosophy which can teach him to be content with penury should be capable of teaching him also the uses of wealth.

The whole profit of the issuance of money has provided the capital of the great banking business as it exists today.

There has been no discovery like it in the history of man. It puts into man's hands the key to using the fundamental energy of the universe.

Nature is in austere mood, even terrifying, withal majestically beautiful.

Physical science enjoys the distinction of being the most fundamental of the experimental sciences, and its laws are obeyed universally, so far as is known, not merely by inanimate things, but also by living organisms, in their minutest parts, as single individuals, and also as whole communities. It results from this that, however complicated a series of phenomena may be and however many other sciences may enter into its complete presentation, the purely physical aspect, or the application of the known laws of matter and energy, can always be legitimately separated from the other aspects.

The fact remains that, if the supply of energy failed, modern civilization would come to an end as abruptly as does the music of an organ deprived of wind.