"Life evolved under conditions of light and darkness, light and then darkness. And so plants and animals developed their own internal clocks so that they would be ready for these changes in light. These are chemical clocks, and they're found in every known being that has two or more cells and in some that only have one cell."

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Thematic Reflection

This quotation examines the core nature of Life as articulated by Jessa Gamble. Within historical and literary traditions, reflections on Life provide actionable mental models, challenging individuals to evaluate personal ethics, self-discipline, and daily actions.

About Jessa Gamble

Jessa Gamble, née Sinclair, is a Canadian and English author and co-owner of the science blog The Last Word on Nothing. Her book, The Siesta and the Midnight Sun: How Our Bodies Experience Time, documents the rituals surrounding daily rhythms. Along with local languages and beliefs, these schedules are losing their global diversity and succumbing to what Gamble calls "circadian imperialism." The foreword was written by Canadian broadcaster Jay Ingram.

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