His casual opinions were accepted by her as if they had been judgments of Solomon.

For this is a philosophy in which even 'the most vulgar and casual opinions are something more than nothing in nature.'

He knew himself, and never trusted his dollar or his fame in casual opinions-neveracted hastily or prematurely on great matters.

This extract from one of Miss Sullivan's letters is added because it contains interesting casual opinions stimulated by observing the methods of others.