About things like a branch, a twig, a mountain, a valley, an ice cube, a strawberry, a candle flame. What discriminates a branch from the openness of reality is thinking. Thinking draws the line between a branch and a twig, a mountain and a valley. It decides the point at which a bud becomes a flower, which becomes a strawberry, then turns to a rotten fruit. Thinking is its own boss here, what it thinks about… are thoughts.
What is reality then? We won’t find out by thinking, that’s for sure. We won’t be able to name it or describe it in thoughts, only meditate, to know it directly.