#### by Loring W. Tu, coordinating editor

Raoul Bott passed away on December 20, 2005. Over a five-decade career
he made many profound and fundamental contributions to geometry and
topology. This is the second part of a two-part article in the
Notices to commemorate his life and work. The first part was an
authorized biography, “The life and works of Raoul Bott”
[e1],
which he
read and approved a few years before his death. Since then there have
been at least three volumes containing remembrances of Raoul Bott by
his erstwhile collaborators, colleagues, students, and friends
[e4],
[e5],
[e2],
I have also written elsewhere about my experiences working
with him
[e3],
This second part presents some personal recollections
that do not overlap with what has already appeared in print. More
reminiscences and appreciations of his work may be found in the
upcoming final volume of the *Collected Papers of Raoul Bott*
[5].

Bott had a passion for mathematics, which he kept to the very end, even after his retirement from Harvard. At the same time, he was firmly planted in the real world. As many of his acquaintances would agree, he exemplified the French phrase joie de vivre. His mathematical work speaks for itself, but it is hoped that the following reminiscences can give some idea of his personality, his zest for life, and his humanity.

The contributions are listed in the order in which the contributors first met Raoul Bott. As the coordinating editor, I have added a short introductory paragraph (in italics) to the beginning of each contribution.