The Leader of the Islamic Revolution, Ayatollah Sayyed Ali Khamenei said the brain drain usually takes place because of the promises made by overseas.
"Some of these promises are tainted with anti-Iran motives," Ayatollah Khamenei told thousands of university students in Tehran on Sunday.
Ayatollah Khamenei underlined religious and divine motives can make expatriate elite return as some of them have actually returned to serve their country.
Islamic Revolution Leader further laid emphasis on unity and spiritual purity in the society, and added," the society won't be purified by pressure and radical moves."
Ayatollah Khamenei highlighted the importance of 'cultural products', adding the necessary infrastructure should be established to that end.
Islamic Revolution Leader continued by highlighting that the presence of university students in popular and student circles abroad can play a key role in 'exporting pure thoughts and messages of the Revolution.'
Ayatollah Khamenei further said universities are the target of enemy plots, so due regard should be paid to the issue of 'discipline' in universities. Nevertheless, Ayatollah Khamenei underlined that 'going to extremes' is not the right way to deal with any issue, including disciplinary matters.
Islamic Revolution Leader then stressed the need for 'freedom of thought' in universities, and said debates should be held there over various issues.
Ayatollah Khamenei urged students to distance themselves from political wrangling in the country, adding differences of opinion should not lead to divisions and friction.
Islamic Revolution Leader then urged students to 'analyze and adopt a stance on' key issues facing the country, including the Tehran Declaration, the UN Security Council resolution on Iran sanctions and Washington's unilateral sanctions against Tehran.