This collection of literature attempts to compile many of the classic works that have stood the test of time and offer them at a reduced, affordable price, in an attractive volume so that everyone can enjoy them.

The following sketches of the lives of clergymen who were great scientists have appeared at various times during the past five years in Catholic magazines. They were written because the materials for them had gradually accumulated during the preparation of various courses of lectures, and it seemed advisable to put them in order in such a way that they might be helpful to others working along similar lines.

The place of the will in its influence upon health and vitality has long been recognized, not only by psychologists and those who pay special attention to problems of mental healing, but also, as a rule, by physicians and even by the general public. It is, for instance, a well-established practice, when two older folk, near relatives, are ill at the same time, or even when two younger persons are injured together and one of them dies, or perhaps has a serious turn for the worse, carefully to keep all knowledge of it from the other one.

In a previous book, "The Thirteenth Greatest of Centuries," I described the period of human activity in which, as it appears to me, more was accomplished that is of significance in the expression of what is best in man and for the development of humanity than during any corresponding period of the world's history.