poison or like products (e.g. alcohol), he sees no danger to liberty to require warning labels on the product. Again, Mill applies his principle. He considers the right course of action when an agent sees a person about to cross a condemned bridge without being aware of the risk. Mill states that because the agent presumably has interest in not crossing a dangerous bridge (i.e. if he knew the facts concerned with crossing the bridge, he would not desire to cross the bridge), it is permissible to forcibly stop the person from crossing the bridge. He qualifies the assertion stating that, if the means are available, it is better to warn the unaware person. With regard to taxing to deter agents from buying dangerous products, he makes a distinction. He states that to tax solely to deter purchases is impermissible because prohibiting personal actions is impermissible and "[e]very increase of cost is a prohibition, to those whose means do not come up to the augmented price." However, because a government must tax to some extent in order to survive, it may choose to take its taxes from what it deems most dangerous. Repeat offences to public through private action Mill expands upon his principle of punishing the consequences rather than the personal action. He argues that a person who is empirically prone to act violently (i.e. harm society) from drunkenness (i.e. a personal act) should be uniquely restricted from the drinking. He further stipulates that repeat offenders should be punished more than first time offenders. Encouraging vice On the subject of fornication and gambling, Mill has no conclusive answer, stating, "[t]here are arguments on both sides." He suggests that while the actions might be "tolerated" in private, promoting the actions (i.e. being a pimp or keeping a gambling house) "should not be permitted." He reaches a similar conclusion with acts of indecency, concluding that public indecency is condemnable. Suicide and divorce Mill continues by addressing the question of social interference in suicide. He states that the purpose of liberty is to allow a person to pursue their interest. Therefore, when a person intends to terminate their ability to have interests it is permissible for society to step in. In other words, a person does not have the freedom to surrender their freedom. To the question of divorce, Mill argues that marriages are one of the most important structures within society;