He is the man whose presence adds fanfare to events, weightage to social messages, and, of course, to the cast of a film! But cinema icon Amitabh Bachchan believes he is not qualified enough to give an opinion and talk about every issue in the country.

"Suddenly many invitations to inaugurate book releases, conferences, chief guests at important events!! I am not qualified for them! My profession does not give me the obvious authority to be the most knowledgeable and justified endorser of various entities!" the veteran actor posted on Twitter.

"...And age does not necessarily indicate mature insight and vision, despite the grey and the glasses... I am still ordinary and ignorant, " he added.

Amitabh promotes causes like eradication of polio, and is a tourism ambassador of Gujarat. On the global platform, he is considered to be an ambassador of Bollywood, seen as one of India's soft power. However, Big B does not find it feasible for him to talk about anything and everything, just because he is a popular star.

"Kind words and gentle demeanour shall not always translate to impressive epithets.. certain basics need to be in place...Being a host on a TV show or an appreciated artist in film, does not become justified qualification, for every other responsibility!

"Gravest fallacy - just because you work in a public domain, does not mean wisdom and wealth of acumen in all walks! So a regret in attendance is then construed as ill behaved arrogance...or undeserved ego..., " he posted further.

The 69-year-old veteran was last seen as the host of the fifth season of game show "Kaun Banega Crorepati".

He had two releases this year -- "Bbuddah Hoga Terra Baap" and "Aarakshan".