Throughout the history, many intellectuals dealt with corruption or theorized about it one way or another. Machiavelli2 had a low opinion on republics, considering them even more corrupt than other regimes, and according to him, corruption leads to moral degradation, bad education and bad faith. On the other hand, however, the great philosopher, diplomat and lawyer Sir Francis Bacon3 was known both for receiving bribes and taking them. When he reached the highest judicial position in England, he was caught in as many as 28 cases of accepting a bribe and defended himself before the parliament by saying that he usually accepted a bribe from both parties involved and that the dirty money therefore did not affect his decisions. The parliament did not accept these arguments and sent him to the jail where he spent only a few days as he was able to bribe the judge.

Thus, although the corruption has been occurring in society ever since, it has only been given more attention in the recent period—the researches on the phenomenon and its negative impacts have become more common after 1995, when countries and international institutions began to be aware of this problem. The attitude of the public toward corruption was, until then, neutral. In 1998, Kaufmann and Gray [1] found that:

Bribery is widespread, especially in the developing and transition countries; there are, however, significant differences between and within regions.

Bribery increases transaction costs and creates insecurity in the economy.

Bribery usually leads to ineffective economic results, in the long term impedes foreign and domestic investments, reallocates talents due to income and distorts sectorial priorities and technology choices (for example, it creates incentives for contracting major defense projects or unnecessary infrastructure projects, but does not encourage investments in rural specialist health clinics or in preventive health care). This pushes companies into the “underground” (outside the formal sector), weakens the state’s ability to increase revenue and leads to ever-increasing tax rates (as too little tax is taken), which is levied on less and less taxpayers, consequently diminishing the state’s ability to provide enough public goods, including the rule of law.

Bribery is unfair, as it imposes a regressive tax, which heavily burdens in particular commercial and service activities performed by small businesses.

Corruption destroys the legitimacy of the state.