O, bildiğim kadarıyla, güvenilir bir arkadaştır.
- He is, so far as I know, a reliable friend.
Bildiğim kadarıyla, o iyi bir adam.
- He is, so far as I know, a good guy.
insofar as (or that), to the extent that, to such an extent.
... an opportunity for all lets us go as far as our dreams and toil will take us ...
... very chimneys unfold as far as the eye can see ...