Head--thanks to the marvellous developments of modern means of
communication and transport--been so vivid, so general, so intense as
in these times. Not only does "the Pope's writ run," as we may say, by
post and telegraph, and penetrate to the inmost recesses of every part
of the globe, so that the Holy See is in daily, nay hourly
communication with every bishop and every local Catholic community;
but never has there been a time when so many thousands, nay tens of
thousands of Catholic clergy and laity, even from the remotest lands,
have actually seen the Vicar of Christ with their own eyes, heard his
voice, received his personal benediction. Well may we say to Pius X.
as to Leo XIII.: "Lift up thy eyes round about and see; all these are
gathered together, they are come to thee; thy sons shall come from
afar, and thy daughters shall rise up at thy side. Then shalt thou see
and abound, and thy heart shall wonder and be enlarged, when the
multitude of the sea shall be converted to thee, the strength of the
Gentiles shall come to thee" (Isaias, lx. 4, 5).

But not only is the present position of the Papacy thus unique and
phenomenal in the world; as the Author of this little book shows in
his first part, its career across the more than nineteen centuries of
the world's chequered history, from Peter to Pius X., is no less
unique and no less phenomenal. This is a fact which may well rivet the
attention, not of the Catholic alone, but of every thinking man, be he
Christian or non-Christian, and which surely calls for some
explanation that lies beyond and above that of the ordinary phenomena
of history. The only possible satisfactory solution of this problem is
the one so concisely, yet so simply, set forth in the following
pages.

The second part is concerned with a more particular aspect of the same