Introduction

The meaning of depth is that kind of intelligence which without your using very much effort gets everything to cooperate with you. You for example never force other people to agree with you but you give them the notion that the idea you wanted them to have was their own. This is a feminine art, preeminent. The man who puts up a sail is using magic. He lets nature do it for him with the intelligence to use a sail. It's more intelligent being than an insect in a way because an insect uses effort like a person who rose a boat and so on.