it is impossible for [him] to marry Nweke’s daughter

Ancient Impossible

For if this country—or any other of the great powers—were to make its defense program a function of its domestic employment situation, it would become impossible to conduct a constructive and well-thought out foreign policy or to develop any lasting collaboration.

It's impossible not to admire a person who devoted his life to his ideas.

How surprising it is that the laws of nature and the initial conditions of the universe should allow for the existence of beings who could observe it. Life as we know it would be impossible if any one of several physical quantities had slightly different values.

An event has happened, upon which it is difficult to speak, and impossible to be silent.

These influences of my young childhood were greatest: 1, the mountain landscape, 2, my father the impossible idealist, and 3, the upringing of a closely-knit Christian home.

It was impossible to conceive of two creatures so different who got along so well and loved each other so much.

One is not born a genius, one becomes a genius; and the feminine situation has up to the present rendered this becoming practically impossible.