Most men cannot accept to be wrong
I know that most men, including those at ease with problems of the greatest complexity, can seldom accept even the simplest and most obvious truth if it be such as would oblige them to admit the falsity of conclusions which they have delighted in explaining to colleagues, which they have proudly taught to others, and which they have woven, thread by thread, into the fabric of their lives.
Yet, certainly, the wise learn many things from their enemies; for caution preserves all things. From a friend you could not learn this, but your foe immediately obliges you to learn it. For example, the states have learned from enemies, and not from friends, to build lofty walls, and to possess ships of war. And this lesson preserves children, house, and possessions.
The present theory then must be considered to be a suggested program or framework for future research and must stand ...
It’s saying no.
That’s your first hint that something’s alive. It says no. That’s how you know a baby is starting to turn into a person. They run around saying no all day, throwing their aliveness at everything to see what it’ll stick to. You can’t say no if you don’t have desires and opinions and wants of your own. You wouldn’t even want to.
No is the heart of thinking.