Don't all empathic human beings understand instinctively that suicide and murder are wrong?

It had been so very long since another human being had understood what it was like.

Any human being who has eaten a bad oyster, spent a night in agony, and vowed never to touch oysters again, will understand this.

But the human beings of this city do not yet understand it.

Quite possibly no human being could have understood.

They do not believe that human beings can understand everything this way, but that it is theoretically possible.

But I fear that the beings involved in this kind of endeavor understand mercy as weakness.

Actually, no single human being in the world had ever understood an intellectual structure of that complexity.

It was, he supposed, just one of the many things that a human being - any human being - would never understand.

It was a loss of motive that a human being could understand.