Breaking his silence amidst the logjam in Parliament, Prime Minister Manmohan Singh today promised action against anybody for any "wrong thing" done in the 2G spectrum allocation.

He also appealed to opposition parties to allow Parliament to function, saying the government is "not afraid" of discussing any issue.

"There should be no doubt in anybody's mind that if any wrong thing has been done by anybody, he or she will be brought to book," Singh said in his first comments on the 2G spectrum issue that has paralysed Parliament for the last two weeks.

Replying to questions after his speech at the HT Leadership Summit here, Singh said various aspects of the 2G spectrum allocation are being looked into by respective investigating agencies "in the domain of their interest".

"But for all these to happen, in a democracy we have to allow Parliament to function... We are ready to discuss all issues. We are not afraid of discussions," he said on the stalemate over the spectrum issue.

"I appeal to all political parties to let Parliament to do its work. We need Parliament to function more regularly to pass legislations, laws and Supplementary Demands for grants for various departments," Singh said.

"It is my humble request to all political parties to allow Parliament to function. We can discuss everything," the Prime Minister said.

While appealing to political parties, he said in a democracy, there was need for "reasoned debate" to raise "nationally-acceptable" approaches.

He refused to speak anything more on the spectrum issue, saying Parliament was in session.

Earlier, in his speech, the Prime Minister talked about the need to deal effectively with the "threats of corruption and crony capitalism", not only in India but all over the world.

Noting that it is "often said that these are testing times", Singh said, "in fact, I cannot help feeling that we in India are always living through testing times. Indeed, as Prime Minister I sometimes feel like a high school student -- going from one test to another."

He said that "the good news is that though being constantly tested, we are winning.... Our youngsters are optimistic and their optimism gives me hope. We must be doing at least some things right."

Observing that people of India face diverse challenges, Singh said, "we live in an era of rising expectations. We live in an era of multiple contestations".

Talking about the new wave of economic growth unleashed in the 1990s, he said reforms did not follow any external recipe.

While replying to a question on Cabinet reshuffle Singh said,  "I do share the thoughts that we must introduce (young leaders)...we must reduce the average age of people in power. That we should bring more younger people into our system of governance,"