This whole edifice of civilization is in its foundations and in all its stones nothing else than the result of the creative capacity, the achievement, the intelligence, the industry, of individuals: in its greatest triumphs it represents the great crowning achievement of individual God-favored geniuses, in its average accomplishment the achievement of men of average capacity, and in its sum doubtless the result of the use of human labor-force in order to turn to account the creations of genius and of talent. So it is only natural that when the capable intelligences of a nation, which are always in a minority, are regarded only as of the same value as all the rest, then genius, capacity, the value of personality are slowly subjected to the majority and this process is then falsely named the rule of the people. For this is not rule of the people, but in reality the rule of stupidity, of mediocrity, of half-heartedness, of cowardice, of weakness, and of inadequacy.
..
Thus it must be admitted that in the economic sphere, from the start, in all branches men are not of equal value or of equal importance. And once this is admitted it is madness to say: in the economic sphere there are undoubtedly differences in value, but that is not true in the political sphere. It is absurd to build up economic life on the conceptions of achievement, of the value of personality, and therefore in practice the authority of personality, but in the political sphere to deny the authority of personality and to thrust into this place the law of the greater number — democracy.

What It Means

This is a placeholder explanation generated by the low-overhead model. It interprets "This whole edifice of civilization is in its foundations and in all its stones nothing else than the result of the creative capacity, the achievement, the intelligence, the industry, of individuals: in its greatest triumphs it represents the great crowning achievement of individual God-favored geniuses, in its average accomplishment the achievement of men of average capacity, and in its sum doubtless the result of the use of human labor-force in order to turn to account the creations of genius and of talent. So it is only natural that when the capable intelligences of a nation, which are always in a minority, are regarded only as of the same value as all the rest, then genius, capacity, the value of personality are slowly subjected to the majority and this process is then falsely named the rule of the people. For this is not rule of the people, but in reality the rule of stupidity, of mediocrity, of half-heartedness, of cowardice, of weakness, and of inadequacy.
..
Thus it must be admitted that in the economic sphere, from the start, in all branches men are not of equal value or of equal importance. And once this is admitted it is madness to say: in the economic sphere there are undoubtedly differences in value, but that is not true in the political sphere. It is absurd to build up economic life on the conceptions of achievement, of the value of personality, and therefore in practice the authority of personality, but in the political sphere to deny the authority of personality and to thrust into this place the law of the greater number — democracy." in the context of "Speech to the Industry Club (21 January 1932) as quoted in The Speeches of Adolf Hitler, April 1922 – August 1939 (1994) by Norman Hepburn Baynes, Oxford University Press, p.787" to mean that wisdom is timeless.