The world of particle physics has lost a giant with the premature passing of Guido Altarelli. Internationally acclaimed for his pioneering research in QCD, weak interactions, precision tests of the Standard Model, neutrino physics and more, he was also universally appreciated for his mentoring of younger theorists and his close interactions with his experimental colleagues. Many of his collaborators and friends will gather to share their scientific adventures with Guido and his warm friendships with them. All are welcome to join us in celebrating the life of an exceptional scientist and human being.

Speakers:  L. Maiani, G. Parisi, S. Forte, G. Martinelli, L. Di Lella, R.K. Ellis, R. Barbieri, G. Dissertori, I. Masina

Organizers:  L. Alvarez-Gaumé, A. De Rújula, J. Ellis, E. Elsen, S. Ferrara, F. Gianotti, G. Giudice, P. Jenni, M. Mangano, M. Pepe Altarelli, G. Veneziano