The heartfelt and funny memoir of a boy who built himself a prosthetic arm out of the world-famous toy bricks. David Aguilar was born missing part of one arm, a small detail that seemed to define his life and limit people’s ideas of who he was and who he could be. But in this funny and heartfelt memoir, David proves that he can throw out the rulebook and people’s expectations and maybe even make a difference in the world―and all with a sense of humor. At only nine years old, David built his first prosthesis from LEGO bricks, and since then he hasn’t stopped creating and thinking about how his inventions, born from a passion for building things, could fuel change and help others. With a voice full of humor and heart, David tells his powerful story, of family and friendship, of heartbreak and loss, and ultimately of triumph and success, as he continues to dream big and build a life and a better world―piece by piece. “Humorous and uplifting…While readers needn’t be LEGO fans to admire David’s ingenuity, fellow builders may be inspired to dream up their own inventions.” ― Kirkus Reviews “Readers will cheer for Aguilar and relate to him as he shares conversational stories about growing up, playing sports, and struggling with school. Family is at the heart of his story, and the endless support and advocacy of his parents, in particular, make this a sweet and uplifting story. Young readers will identify with this creative young person and will question society’s definition of “normal.” ― School Library Journal David Aguilar and his father, Ferran Aguilar, are from Andorra, in Europe. David was born missing part of one arm. At the age of nine, he designed his first prosthesis with LEGO bricks, and in high school he built the next generation, which he named the MK-1. David’s father encouraged him to make a video about his prosthesis and the huge role that LEGOs played in his life, and posted it on social media, where it went viral and changed both of their lives. In addition to telling his story in this book, David is also the protagonist of the Spanish documentary Mr. Hand Solo , which won the award for best documentary at the Boston Science Fiction Film festival. David is currently developing his own brand, Hand Solo, which will aim to benefit various organizations for the disabled and fight against the stigma of “diff-ability,” as he calls it. Follow David and Ferran on Twitter @Handsolooficial and @AguilarFerran. Lawrence Schimel is a bilingual author who writes in both Spanish and English, with more than one hundred books to his credit. He is also a prolific literary translator, into English and into Spanish. His translated books include Wanda Gág’s Millions of Cats ; George Takei’s graphic novel They Called Us Enemy ; and Some Days , written and illustrated by María Wernicke; among many others. He lives in Madrid, Spain. Follow him on Twitter @lawrenceschimel.