Conviction is the point of departure for the realization of our true ideal. Conviction is not intellectual, you cannot obtain it by science or reason. Conviction is infinite wisdom, hannya haramita. If you repeat, this is produced, and you will be able to become strong. Conviction allows the nature of something to change from limited to unlimited.
Conviction is original power, the source to create infinite wisdom, without limits.
For people who do zazen, conviction appears unconsciously, naturally, automatically. Mushotoku is not passive but active. This is an infinite desire, not trying to obtain. If you do not limit desire, it becomes infinite. If you have a small goal, you cannot be limitless.