The gem cannot be

The gem cannot be polished without friction nor man without trials. Confucius

Adversity is like a

Adversity is like a strong wind. I don’t mean just that it holds us back from places we might otherwise go. It also tears away from us all but the things that cannot be torn, so that afterward we see ourselves as we really are. Arthur Golden

One who gains strength

One who gains strength by overcoming obstacles possesses the only strength which can overcome adversity. Albert Schweitzer

Nearly all men can

Nearly all men can stand adversity, but if you want to test a man’s character, give him power.
Abraham Lincoln