In French, “cultiver son jardin intérieur” means to tend to your internal garden—to take care of your mind. The garden metaphor is particularly apt: taking care of your mind involves cultivating your curiosity (the seeds), growing your knowledge (the trees), and producing new thoughts (the fruits).

A mind garden is not a mind backyard. It’s not about dumping notes in there and forgetting about them. To tend to your garden, you need to plant new ideas. The best way to do this is by replanting stems and cuttings from existing ideas you’ve added to your garden—by consistently taking notes, and combining them together, a bit like grafting.