Leo is a genius. His pet cat named Pallas is not! But together they come up with some brilliant inventions based on maths shapes. And all this - more than 30,000 years ago! Circles covers the essentials of this geometrical shape, its functions and applications.

Leo Castelli reigned for decades as America’s most influential art dealer. Now Annie Cohen-Solal, author of the hugely acclaimed Sartre: A Life (“an intimate portrait of the man that possesses all the detail and resonance of fiction”—Michiko Kakutani, The New York Times), recounts his incalculably influential and astonishing life in Leo and His Circle. After emigrating to New York in 1941, Castelli would not open a gallery for sixteen years, when he had reached the age of fifty. But as the first to exhibit the then-unknown Jasper Johns, Castelli emerged as a tastemaker overnight and fast came to champion a virtual Who’s Who of twentieth-century masters: Rauschenberg, Lichtenstein, Warhol, and Twombly, to name a few. The secret of Leo’s success? Personal devotion to the artists, his “heroes”: by putting young talents on stipend and seeking placement in the ideal collection rather than with the top bidder, he transformed the way business was done, multiplying the capital, both cultural and financial, of those he represented. His enterprise, which by 1980 had expanded to an impressive network of satellite galleries in Europe and three locations in New York, thus became the unrivaled commercial institution in American art, producing a generation of acolytes, among them Mary Boone, Jeffrey Deitch, Larry Gagosian, and Tony Shafrazi. Leo and His Circle brilliantly narrates the course of one man’s power and influence. But Castelli had another secret, too: his life as an Italian Jew. Annie Cohen-Solal traces a family whose fortunes rose and fell for centuries before the Castellis fled European fascism. Never hidden but also never discussed, this experience would form the core of a guarded but magnetic character possessed of unfailing old-world charm and a refusal to look backward—traits that ensured Castelli’s visionary precedence in every major new movement from Pop to Conceptual and by which he fostered the worldwide enthusiasm for American contemporary art that is his greatest legacy. Drawing on her friendship with the subject, as well as an uncanny knack for archival excavation, Annie Cohen-Solal gives us in full the elegant, shrewd, irresistible, and enigmatic figure at the very center of postwar American art, bringing an utterly new understanding of its evolution.

Beloved picture book creator and four-time Caldecott Honor-winner Leo Lionni's very first story for children, and a New York Times Best Illustrated Book of the Year. Little Blue and Little Yellow are best friends, but one day they can’t find each other. When they finally do, they give each other such a big hug that they turn green! How they find their true colors again concludes a wonderfully satisfying story told with colorful pieces of torn paper and very few words. Leo Lionni launched his children’s book career in 1959 with Little Blue and Little Yellow, and this 50th-anniversary edition, complete with Lionni’s own explanation of how the book came to be, is sure to resonate with children today.

Looks at Leonardo da Vinci love of nature and how it inspired many of his ideas.

In order to unlock his family’s past and how he became an orphan, Leo will need every skill and invention he has—even if his inventions don’t always work. This middle-school adventure mystery is perfect for puzzle solvers, as Leodiscovers a series of tunnels below his school filled with clues, riddles andpuzzles to solveabout his identity and his family. A “lifer” at the secluded Academy of Florence, Leo has never met his parents ... or anyone in his family for that matter. His current “family” is his mechanical monkey and robot lion, who along with his charming best friend and fellow lifer, Savvy, only get him into trouble. But after Leo’s latest experiment goes catastrophically wrong, he finds a mysterious clue that opens an underground maze—one that seems to have been created for him to solve. Leo hopes the tunnels will help him discover the identities of his parents and the reason he’s an orphan in the first place. Instead, he finds that his past and possibly even his future is somehow linked to the innovative Wynn Toys company, whose genius president mysteriously disappeared years before. Leo must use his creativity and scientific know-how to revive the toy company, oust its dastardly leader, and discover the fate of his real family. LEO, Inventor Extraordinaire: Is perfect for kids 8 to 12 who enjoy action, adventure, humor, and mystery Is likeThe DaVinci Codefor kids, with robots, wacky inventions, and puzzles to solve Contains almost 60 pieces of original black and white artwork Encourages imagination and the development of STEAM skills LEO, Inventor Extraordinaire is a Northern Lights Book Awards Winner in the Middle Grade Fiction category for 2021 -- The Northern Lights Book Awards

In 1917 at the height of his fame, Alan Leo was charged with fortune-telling, which was illegal, and taken to court. He had been tried on similar charges in 1914, which had been dismissed. But the charges brought in 1917 stuck. Leo was given a hefty fine. As winning on appeal seemed unlikely, Leo paid the fine and went to Cornwall for a rest, where on 30 August, 1917, he unexpectedly died of a cerebral hemorrhage, aged 57. His friends blamed it on the strain of the court proceedings. At the time of his death, this Dictionary was one of Leo's unfinished projects. Installments of the Dictionary had appeared in Leo's monthly magazine, Modern Astrology, up to the end of the article "Horoscope" (pgs. 130-136). That the project was long-standing is hinted by the article on Hindu Astrology (pgs. 76-101), written by Sepharial some years before and which Leo had presumably purloined. More material was in preparation, but Leo's untimely death brought matters to a halt. By the early 1920's, Vivian Robson had succeeded Leo as editor of Modern Astrology, a post he shared with Bessie Leo, the widow. An intense, scholarly type, Robson stumbled across bound copies of Leo's incomplete book while he was compiling his own astrological dictionary. At the suggestion of Bessie, Robson abandoned his dictionary and set about to complete Leo's, using the many notes and fragments that Leo had left. Which was published in 1929 as Alan Leo's final book. Shortly thereafter Bessie and Vivian had a falling out, whereupon Vivian left. This book was to be an orphan. Like its precursor, James Wilson's Dictionary of Astrology of 1819, Leo's book contains several full-blown monographs. Both books have lengthy entries on Horary Astrology, for example. These articles tend to break the flow of the book. For this reason the current publishers, Astro-America, have added headings to each page, that the reader may know whereabouts in the book he may be. The publishers have also added a list of principal articles to the front, as well as a complete list of entries (forming an index) in the back. Alan Leo's Dictionary of Astrology is again in print. Profit from the wealth of knowledge it contains!