Most people recognise Charles Robert Darwin for his contributions to the science of evolution. But in 1837, the English naturalist, geologist and biologist, created a landmark sketch titled Tree of Life as a framework for his speculations. This intuitive drawing of an evolutionary tree is headlined by the words ‘I think’ and is a precursor to his revolutionary theories of evolution, common descent and natural selection.

Inspired by this sketch, artist and curator Jitish Kallat is inviting artists and audiences to consider whether Darwin first wrote the words ‘I think’ and then proceeded to draw his emergent thoughts, or if it was the other way around. The outcome is an ambitious curatorial project in collaboration with South South, an online community and resource for artists, galleries, curators and collectors, and non-profits focusing on the Global South. The project encompasses 60 artists, 28 galleries and 29 countries.