We never really know what they will do from time to time.

Their action is still future and uncertain; but from our familiarity with their character, we surmise or imagine what they expect or think, and we then act so as to make our conduct fit into theirs.

Here is suggestion of a personal kind which depends upon our ability, in a sense, to reconstruct the character of others, leading us out into appropriate action.

This is the sphere of the most important affairs of our lives.

It appears especially so when we consider its connection with the next great sort of action from suggestion.
This next and highest sphere is action from the general or abstract thoughts which we have been able to work up by the apperceiving activity of the mind.