Wars of philosophies

If a philosophy is attacked, it clears itself of its doubts and inconsistencies. The more vehement, the more violent the attack, the better.
If the philosophy gets destroyed in the process, it means that the inconsistencies were too much- it got the end that it deserved. It was not worth surviving.
If it survives, it comes out stronger than ever. It is an indication of the trueness of the philosophy.

Survival does not mean that the form of the philosophy remained completely intact- it could have undergone changes because of the attacks. I would say that the philosophy survived if some core ideas remained intact- something remained untouched. And these would be what I call the purest of ideas.