Jacob Rothschild

My mother was a Bloomsbury figure: a great friend of TS Eliot, Duncan Grant, Vanessa Bell. My grandmother, Mary Hutchinson, gave her life to works of art, being an admirer of Matisse and Giaometti, whom I collected as a young man because of her.

Unilever, Nestle and SAB Miller are all taking a long-term approach to investing in sustainable resource consumption. Each is driving through better resource management, which is expected to yield positive returns in the future.

It's a question of spreading the available energy, aerobic and anaerobic, evenly over four minutes. If you run one part too fast, you pay a price. If you run another part more slowly your overall time is slower.

Topsoil is a place of digestion. It sucks and chews things into smaller pieces. When it's hungry, it turns grey and stony; when it's thirsty, it opens thousands of cracked lips. Subsoil is more skeletal: it doesn't digest.