The is always much to be said for not attempting more than you can do and for making a certainty of what you try. But this principle, like others in life and war, has it exceptions.
No printed word, nor spoken plea can teach young minds what they should be. Not all the books on all the shelves - but what the teachers are themselves.
If the king is in the palace, nobody looks at the walls. It is when he is gone, and the house is filled with grooms and gazers, that we turn from the people, to find relief in the majestic men that are suggested by the pictures and the architecture.
Now let's make two things clear: ISIL is not 'Islamic.' No religion condones the killing of innocents, and the vast majority of ISIL's victims have been Muslim. And ISIL is certainly not a state. It was formerly al Qaeda's affiliate in Iraq, and has taken advantage of sectarian strife and Syria's civil war to gain territory on both sides of the Iraq-Syrian border. It is recognized by no government, nor the people it subjugates. ISIL is a terrorist organization, pure and simple. And it has no vision other than the slaughter of all who stand in its way.
Nobody ever launched an attack without having misgivings beforehand, You ought to have misgivings before; but when the moment of action is come, the hour of misgivings is passed. It is often not possible to go backward from a course which has been adopted in war. A man must answer "Aye" or "No" to the great questions which are put, and by that decision he must be bound.
Now this is the Law of the Jungle -- as old and as true as the sky; And the Wolf that shall keep it may prosper, but the Wolf that shall break it must die. As the creeper that girdles the tree-trunk the Law runneth forward and back -- For the strength of the Pack is the Wolf, and the strength of the Wolf is the Pack.
True words aren't eloquent; eloquent words aren't true. Wise men don't need to prove their point; men who need to prove their point aren't wise. The Master has no possessions. The more he does for others, the happier he is. The more he gives to others, the wealthier he is. The Tao nourishes by not forcing. By not dominating, the Master leads.
A principle is a principle and in no case can it be watered down because of our incapacity to live it in practice. We have to strive to achieve it, and the striving should be conscious, deliberate and hard.