Aligarh, Dec. 22 -- Prime Minister Narendra Modi on Tuesday said that ideological differences must not exist when it comes to the national interest and that it is important to blend one's aspirations with national goals.

AMU, set up in 1920, has completed 100 years of existence as a centre of higher learning. The Prime Minister also released a special commemorative postal stamp in the event

AMU's campus represents a 'Mini India', Modi said delivering a keynote address at the university's centenary celebrations, adding that the diversity present is not only strength to the university, but to the entire nation.

Asserting that politics and society can wait but development cannot, the Prime Minister said, "There are elements that may have ...