laik ve demeokratik rejimimizin temel kurumu Türkiye Büyük Millet Meclisi, açıldığı günden bu yana tarihsel sorumluluk üstlenmiş, varlığı ve çalışmalarıyla Ulusumuza güven vermiştir.
Remarks about the translation
cumhurbaşkanı Ahmet Necdet Sezer TBMM de yaptığı bir konuşma
The Grand National Assembly of Turkey, the basic governmental organization of our secular, democratic regime, has taken on a historical responsibility from the day it was opened until today, inspiring confidence in our nation with its existence and efforts.
Remarks about the translation
Note: I inserted the word "governmental" to make the meaning clearer in English.