It is much harder to struggle against irrelevance than against exploitation. - Yuval Noah Harari

I have participated in numerous private and public debates about gay marriage, and all too often some wise guy asks ‘If marriage between two men is OK, why not allow marriage between a man and a goat?’ From a secular perspective the answer is obvious. Healthy relationships require emotional, intellectual and even spiritual depth. A marriage lacking such depth will make you frustrated, lonely and psychologically stunted. Whereas two men can certainly satisfy the emotional, intellectual and spiritual needs of one another, a relationship with a goat cannot. Hence if you see marriage as an institution aimed at promoting human well-being – as secular people do – you would not dream of even raising such a bizarre question. Only people who see marriage as some kind of miraculous ritual might do so.

Scientists, for their part, need to be far more engaged with current public debates. They “should not be afraid of making their voice heard when the debate wanders into their field of expertise, be it medicine or history. Silence isn’t neuatrality; it is supporting the status quo. Of course, it is extremely important to go on doing academic research and to publish the results in scientific journals that only a few experts read. But it is equally important to communicate the latest scientific theories to the general public through popular-science books, and even through the skilful use of art and fiction.

The greatest crimes in modern history resulted not just from hatred and greed, but even more so from ignorance and indifference.