I think we should go back to first principles.

　　我認為我們應該回到基本原則上。

　　I always think of you as one of the family.

　　我一直把你當成自家人。

　　He'd like more time to think things over.

　　他希望有更多的時間把情況考慮周詳。

　　Their family has always been well thought of around here.

　　他們家在這一帶一直頗受敬重。

　　And again, we must think of the cost.

　　再說，我們必須考慮成本。