Thus, the influence of new inventions was to change a man's environment, both physical and mental. Now every man is said to be the product of his environment and his heredity; so that the influence of these new inventions was to change men to a degree proportional to the degree by which they changed their environment. This does not mean that inventions have changed man biologically, or even changed him so much that he will act very differently from a savage, under abnormal conditions. It does mean, however, that they have caused men so to adapt themselves to the new environment which inventions have created, that, while in that environment, they will for all practical purposes, be very different from savages. It means that under nearly all the conditions of living, a gentleman in civilized society will be a gentleman--courteous, refined, law-abiding and moral. It does not mean that he will be perfect, but that he will be very much more courteous, refined, law-abiding and moral than a savage; and it means, in consequence that the society of civilized people in general will possess these characteristics much more than any society of savages does. Not only, however, have these inventions changed the environment of civilized man, they have changed his heredity also; because they had previously changed the environment of his parents, grandparents and other ancestors. The graduate of Oxford of 1850, the son of an Oxford graduate who was also the son of an Oxford graduate, though he was biologically the same as his barbarian ancestors of ten thousand years before, was nevertheless a much more refined, intelligent and courteous gentleman. Under certain abnormal conditions, such as intense thirst, hunger, jealousy, passion or unlooked-for temptation he might act as badly as a savage:--in fact such men sometimes do. But nevertheless, the fact that in 99% of the conditions under which he lives he acts as a gentleman and not as a savage makes him 99% a gentleman, and only 1% a savage, during his mortal life.