cornerstone

Noun

Meaning

the fundamental assumptions from which something is begun or developed or calculated or explained

a stone at the outer corner of two intersecting masonry walls

a stone in the exterior of a large and important building; usually carved with a date and laid with appropriate ceremonies

Source: WordNet

foundation base basis groundwork fundament center keystone clef radix cynosure support ground stone prop vaulting

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crown side outside border edge boundary

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stone assumption supposition supposal

The cornerstone of the political correctness that dominates campus culture is radical feminism. Phyllis Schlafly

I tell you, in my opinion, the cornerstone of democracy is free press - that's the cornerstone. Miloš Forman

Self-respect is the cornerstone of all virtue. John Herschel

Doing what you love is the cornerstone of having abundance in your life. Wayne W. Dyer

The evolution of the New Era rests on the cornerstone of Knowledge and Beauty. Nicholas Roerich

The rejected stone will become the cornerstone of the wall. Sicilian Proverb