"This is Philip Grant's story to encourage and support your thoughts/ideas."
Here's a breakdown of the phrase:
* Ae Tika - This is true/correct
* tena te korero a Philip Grant - this is the story of Philip Grant
* Hei manaaki - to encourage
* Hei tautoko - to support
* ou koutou rerenga whakaaro - your thoughts/ideas
It's essentially saying that the story of Philip Grant is intended to inspire and help you develop your own thoughts and ideas.