Translation Help

[mikenyork]

Here is a quote from a book by Buddhadasa called พุทธวิถีชนะความทุกข์

ธรรมะคือระบบของการปฏิบัติที่ทูกต้องแก่ความเป็นมนุษย์ ทุกขั้นตอนแห่งวิวัฒนาการทั้งเพื่อประโยชน์ของตนเองและเพื่อประโยชน์ของผู้อื่น

The Dharma is a system of correct behavior for (?) human beings; (which includes) every developmentally (necessary) step, both for the benefit of oneself and for the benefit of others.

My questions: 1. is it permissible to use "for" to translate แก่; 2. have I gone too far in putting implied words "which includes" and, even more so, "necessary".

Any help much appreciated. (And apologize in advance for my Thai spelling and typing).

[schoopinij]

your spelling is alright don't worry

just a bit wrong spelling in this part

"การปฏิบัติที่ทูกต้องแก่" it suppose to be "การปฏิบัติที่ถูกต้องแก่"

well you translated it quite well but you don't have to put necessary in the sentence , so as "which includes'

I'm not sure if this is a good translation for me but I reckon that it should be like

The Dharma is a system of correct behavior for human beings. Every developmentally step is for the benefit of oneself and for the benefit of others. this would be fine