"The relation between experimentalists and theorists is often one of healthy competition for truth and less healthy co…"

"If you made a short visit to CERN's Theory Division you might think that you are in a zoo. But that is not entirely r…"

"What is important is to invent something last, not first."

"Now, what we need is clever people that are not afraid of thinking deep, of getting their hands dirty, and of tacklin…"

"In spite of the impressive success of quantum mechanics in describing atomic physics, it was immediately clear after …"

"Quantum field theory is the basic tool to understand the physics of the elementary constituents of matter. … It is bo…"

"If Dirac’s idea restores the stability of the spectrum by introducing a stable vacuum where all negative energy state…"

"In 1929 Oskar Klein stumbled into an apparent paradox when trying to describe the scattering of a relativistic electr…"