On the wooden board outside of the meditation hall in Zen monasteries, there is a four-line inscription. The last line is, “Don’t waste your life.” Our lives are made of days and hours, and each hour is precious. Have we wasted our hours and our days? Are we wasting our lives? These are important questions. Practicing Buddhism is being alive in each moment. When we practice sitting or walking, we have the means to do it perfectly. During the rest of the day, we also practice. It is more difficult, but it is possible. The sitting and the walking must be extended to the non-walking, non-sitting moments of our day. That is the basic principle of meditation.