The boundary to what we can accept is the boundary to our…

The boundary of man is moderation. When once we pass that pale our guardian angel quits his charge of us.

— Owen Feltham

It is indeed the boundary of life, beyond which we are not to pass; which the law of nature has pitched for a limit…

— Michel de Montaigne

The boundary condition of the universe is that it has no boundary.

— Stephen Hawking

Boundary lines, of any type, are never found in the real world itself, but only in the imagination of the mapmakers.

— Ken Wilber

Does something which exists on the edge have no true relevance to the stable center, or does it, by being on the edge, become…

— Lucy Grealy

Man, there's no boundary line to art!

— Charlie Parker

It's very difficult to know when you're crossing the boundary. I hate the word boundary because I never think about it when taking a…

— Carine Roitfeld

“A healthy boundary creates controlled vulnerability.”

— Pia Mellody

No one can cross the boundary into another -- for the simple reason that no one can gain access to himself

— Paul Auster

A boundary is not that at which something stops, but that from which something begins.

— Martin Heidegger

“Setting a boundary” means protecting your joy and well-being by telling someone to stop a harmful behavior. Practice setting a boundary try saying: “I…

— Lauren Martin

“You can only exceed your limits if you’ve discovered them.”

— Roel van Sleeuwen

Boundary, n. In political geography, an imaginary line between two nations, separating the imaginary rights of one from the imaginary rights of another.

— Ambrose Bierce

Only if you reach the boundary will the boundary recede before you. And if you don't, if you confine your efforts, the boundary will…

— Hugh Nibley

Every door is another passage, another boundary we have to go beyond.

— Rumi