It is curious to reflect, for example, upon the remarkable legend of the Philosopher's Stone, one of the oldest and most universal beliefs, the origin of which, however far back we penetrate into the records of the past, we do not probably trace its real source.

Some of the beliefs and legends bequethed to us by Antquity are so universally and firmly established that we have become accustomed to consider them as being almost as ancient as humanity itself. Nevertheless we are tempted to inquire how far the fact that some of these beliefs and legends have so many features in common is due to chance, and wether the similarity between them may not point to the exestience of an ancient, totally unknown and unsuspected civilization of which all other traces have disappeared.

With all our mastery over the powers of Nature we have adhered to the view that the struggle for existence is a permanent and necessary condition of life.

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 blame for the future 'plight of civilization] must rest on scientific men, equally with others, for being incapable of accepting the responsibility for the profound social upheavals which their own work primarily has brought about in human relationships.

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.

Innumerable entirely new compounds have been produced in the last century. The artificial dye-stuffs, prepared from materials occurring in coal-tar, make the natural colours blush. Saccharin, which is hundreds of times sweeter than sugar, is a purely artificial substance. New explosives, drugs, alloys, photographic substances, essences, scents, solvents, and detergents are being poured out in a continuous stream.