19th-century philosopher John Stuart Mill was a leading thinker on free speech. London Stereoscopic Company

Explainer: what is free speech?

The concept of ‘free speech’ is devilishly difficult, and depends greatly on a person’s political and philosophical viewpoint.
David Leyonhjelm is chairing the Senate inquiry into ‘Personal Choice and Community Impacts’. AAP/Sam Mooy

Is the minimal state a reasonable response to the nanny state?

We don’t know what will come out of the Senate inquiry into the ‘nanny state’, but we do have some idea about what Australia would look like based on libertarian principles.
Usain Bolt (centre) won the highly anticipated men’s 100m event at the World Athletics Championships in Beijing. EPA/Hu Wong

Why are we so opposed to performance‑enhancing drugs in sport?

In sport, there seems no reasonable justification for drawing a line in the sand that places drug use on one side and the other performance enhancers on the other.
Most of us can’t bend it like Beckham, for various reasons. But is that necessarily the worst thing? Reuters/Ben Nelms

Why equality of opportunity is neither possible nor desirable

Rather than hold on to the idea of equality of opportunity, it might be more accurate to say that we don’t really support it because it comes at too high a price.
The world is recognising that the issue of same-sex marriage is a matter of what state law, not religious doctrine, says, to the extent that Luxembourg’s Prime Minister Xavier Bettel (right) and Gauthier Destenay recently married. EPA/Julien Warnand

Same‑sex marriage should not be a matter for a conscience vote

Same-sex marriage is about state recognition of the union between two people and is a political issue. Religious belief can apply in a church and in individual decisions, but not to a secular state.
Australia’s politicians were unable to save Myuran Sukumaran and Andrew Chan from a firing squad in Indonesia. AAP/Mick Tsikas

Chan and Sukumaran are victims of the futile war on drugs

Australia’s politicians were unable to make the most persuasive argument for clemency for Andrew Chan and Myuran Sukumaran because Australia is also a combatant in the misguided war on drugs.

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