Gise was a demanding teacher. He had a genius for making a child think, and a low
tolerance for whining. From him, Jeff acquired an almost religious respect for self-
reliance and for the mathematics of hard work. The grandfather’s most famous in-
struction, repeated in commencement speeches decades later, was that being clever
is a gift but being kind is a choice — the lesson being that gifts are inherited free of
charge while choices are the only honest measure of a person. The boy took it in
with the ranch dust, and it never left him.
There was also, in those years, the first appearance of the inventive reflex that would
define his life. He built an automatic gate for his bedroom — an elaborate apparatus
of pulleys and rope that slammed the door when he pressed a switch. He tried to
make a solar cooker out of an umbrella and aluminum foil, and was said to have
roasted a wiener with it in the Texas sun. In Houston, he converted the family garage
into a laboratory of half-finished projects, and his parents learned to look for him
among the soldering irons and disassembled appliances. He was not a child who col-
lected things. He was a child who took things apart.
One invention from those years became family legend. As a boy he wanted to sleep
late in the summers, but hated waking to the blare of an alarm clock. He built a de-
vice out of a Radio Shack kit that would, at the appointed hour, dump a handful of
marbles onto his chest from a tray above the bed. The marbles rolled, the boy rose,
and the invention was judged a success. His mother would tell the story for the rest
of her life, usually adding that the boy could never leave a problem alone until he
had solved it in his own way.
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In the early 1970s the family moved again, to Miami, where Miguel pursued a new
posting and young Jeff entered Palmetto Senior High School. He was an unusual
teenager: polite to teachers, indifferent to the social pecking order, and already sure
of his direction. He dated rarely, spent weekends at the computer, and took a job flip-
ping eggs at a McDonald’s Kitchen — his first experience, he would later say, of work-
ing with people who were not at all like him and of discovering that he respected
most of them deeply.
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