We are boxed in by the boundary conditions of our thinking

There ought to be something very special about the boundary conditions of the universe and what can be more special than that there is…

— Stephen Hawking

“Never for an instant admit that you are sick, weak, or ill unless you wish to experience these conditions, for the very thinking of…

— Orison Swett Marden

“Don't gloss over a routine or piece of code involved in the bug because you "know" it works. Prove it. Prove it in this…

— Andrew Hunt

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

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

— Owen Feltham