Today is the fifth day of Higan week, the three days before the equinox and the three days after. As explained in a Nichiren Shu brochure:
For Buddhists, this period is not just one characterized by days with almost equal portions of light and dark. Rather, it is a period in which we strive to consciously reflect upon ourselves and our deeds.
Each of the days before and after the equinox are devoted to one of the Six Paramitas, the practice of perfection taught to Bodhisattvas. Today we consider the fourth perfection, Energy.
Six Perfections: Buddhism & the Cultivation of Character, p 146It is easy to see how the capacity for energy of spirit might be important to the conception of the bodhisattva. Imagine a truly good person – thoughtful and compassionate in living – who in spite of that goodness lacks the vitality that significant accomplishments require. This person acts selflessly for the benefit of the community, but lacks energy.
Although meaningful contributions are made, they are insubstantial and limited – local in character. By contrast, imagine the same sort of person, thoughtful, compassionate and overflowing with energy and the capacity for focused work. The enlightening effect of the second far overshadows the first, even though their compassion and selflessness are equal. The difference between anything done meekly and that same thing done energetically is enormous, and justifies our attention.