When drops of water fill a vase, it is not the first drop that fills it, nor the last drop, nor each drop individually; through the gathering of dependent factors the vase is filled.
Likewise, when someone experiences joy and suffering –the effects– this is not due to the first instant of their cause, nor is it due to the last instant of the cause.
Joy and pain are felt through coming together of dependent factors. So within this mere appearance I will observe ethical norms. —Acharya Dharmarakshita