Evil is a double-edged sword, if you use it you'll end up cutting you

Man's devilish thoughts is the devil and the devil is man.

If you throw stones on my way to stumble and I fall, you try to put extra care when passing my way, lest you stumble and fall.

A son for a son, heh. But that's a grandson...and he never was much use." --Walder Frey

Now when Túrin learnt from Finduilas of what had passed, he was wrathful, and he said to Gwindor: 'In love I hold you for your rescue and sake-keeping. But now you have done ill to me, friend, to betray my right name, and call my doom upon me, from which I would lie hid.'But Gwindor answered: 'The doom lies in yourself, not in your name.

Each new mornNew widows howl, new orphans cry, new sorrowsStrike heaven on the face, that it resoundsAs if it felt with Scotland, and yelled outLike syllable of dolor.