From an acclaimed Harvard professor and one of Time’s most influential people, this paradigm-shifting book shows how almost everything we think we know about aging is wrong, offers a front-row seat to the amazing global effort to slow, stop, and reverse aging, and calls readers to consider a future where aging can be treated.

For decades, experts have believed that we are at the mercy of our genes, and that natural damage to our genes—the kind that inevitably happens as we...

From the creator of Valuetainment, the #1 YouTube channel for entrepreneurs, comes a practical and effective guide for thinking more clearly and achieving your most audacious business goals.

This Book presents a course in elementary mathematics adapted to the needs of students in the freshman year of an ordinary college or technical school course, and of students in the first year of a junior college. The material of the text includes the essential and vital features of the work commonly covered in the past in separate courses in college algebra, trigonometry, and analytical geometry.

The fundamental idea of the development is to emphasize the fact that mathematics cannot be ar...

In the following book, constant references to the original historians have been added, in order to make the work serve, not only as a popular history, but also as an index for scholars who may be more familiar with classic literature than with the Byzantine writers.

The Constantinopolitan era places the birth of Christ in the year 5509, and commences on the 1st September. Thus the 31st August, of the first year of the Christian era, is the last day of the year 5508 of the Constantinopolitan e...

Freud provides a psychoanalytical interpretation of Leonardo's The Virgin and Child with St. Anne. According to Freud, the Virgin's garment reveals a vulture when viewed sideways. Freud claimed that this was a manifestation of a "passive homosexual" childhood fantasy that Leonardo wrote about in the Codex Atlanticus, in which he recounts being attacked as an infant in his crib by the tail of a vulture. He translated the passage thus:

It seems uranous and rose are the love of my life and that ...

It is believed by the author that a classification and presentation of selected groups of the devices produced in the past by which it was by the inventor believed, self-motive power had been attained, will save much work in fields already thoroughly exploited.

So far as the author knows no book on the subject has appeared since 1870. The various encyclopedias published contain articles on the subject, but they are necessarily brief, and not satisfying to young men who have become interested ...

It is intended to have the first sixteen pages of this book simply read in the class, with such running comment and discussion as may be useful to help the beginner catch the spirit of the subject-matter, and not leave him to the mere letter of dry definitions. In like manner, the definitions at the beginning of each Book should be read and discussed in the recitation room.

There is a decided advantage in having the de_nitions for each Book in a single group so that they can be included in on...

The translation by Constance Garnett from the original Russian is widely regarded as a reference. Garnett translated seventy volumes of Russian prose for publication, including all of Dostoyevsky's novels. Dostoyevsky's works of fiction include 17 short stories, in this edition included wonderful stories that we published:

– AN HONEST THIEF,

– A NOVEL IN NINE LETTERS,

– AN UNPLEASANT PREDICAMENT,

– ANOTHER MAN'S WIFE OR THE HUSBAND UNDER THE BED,

– THE HEAVENLY CHRISTMAS T...

THE modest dimensions of this book are perhaps sufficient indication that it is not intended as an aid to the collector. There are about five hundred and fifty known species of spiders in the United Kingdom alone, and at least an equal number of pages would be needed to describe them.

There are certain days of the year when the immense wealth of spider industry going on all around us is revealed in a way calculated to strike even the least observant. We all know—and derive no peculiarly ple...