What, then, does it mean to be a bodhisattva? Basically, in the Lotus Sutra it means using appropriate means to help others. And that, finally, for the Lotus Sutra, is what Buddhism itself is. It is an enormous variety of means developed to help people live more fulfilling lives, which can be understood as lives lived in the light of their interdependence. This is what many of its stories are about: someone – a father-figure/buddha, or friend/buddha, or guide/buddha – helping someone else gain more responsibility for their own lives.

Even if you search in all directions,
There are no other vehicles,
Except the appropriate means preached by the Buddha.

Thus, the notion of appropriate means is at once both a description of what Buddhism is, or what Buddhist practice primarily is, and a prescription for what our lives should become. The Lotus Sutra, accordingly, is a prescription of a medicine or religious method for us — and, therefore, at once both extremely imaginative and extremely practical.

It is in this sense that appropriate means is an ethical teaching, a teaching about how we should behave in order to contribute to the good. It is prescriptive not in the sense of a precept or commandment, but in the sense of urging us, for the sake both of our own salvation and that of others, to be intelligent, imaginative, even clever, in finding ways to be helpful.
A Buddhist Kaleidoscope; Gene Reeves, The Lotus Sutra as Radically World-affirming, Page 194