I have found as

I found, as every teacher does, that there is nothing like teaching to help one learn.

When we take the Buddha as an authority, as a reliable teacher we do so on the basis of having investigated and examined his principal teaching, the Four Noble Truths.

Similarly, when we take the Buddha as an authority, as a reliable teacher, we do so on the basis of having investigated and examined his principal teaching, the 4 Noble Truths.

The mediocre teacher tells. The good teacher explains. The superior teacher demonstrates. The great teacher inspires.