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Description
The first run of the LHC has redefined the boundary conditions for the discussion of future facilities for High Energy Physics. On one side, the discovery of the Higgs and the knowledge of its mass clearly define the needs, the challenges and the prospects of future precise measurements of its properties. On the other, the lack on new physics signals stimulates reconsideration of theoretical scenarios, and opens a broad discussion of the best ways to move forward. The option of a 100 TeV proton-proton collider, in the context of a broader complex enabling also high-luminosity electron-positron collisions, emerges as a possible priority for the field. I will present the physics opportunities offered by this collider, summarize the ongoing initiatives towards defining its scope and technical challenges, and provide some personal perspective.