Possible Clues:

• They're subject to the aspects of my personality, it seems
• How grand it is in these subjects
• Subject matters
• All USA TODAY crosswords have them
• They're subject to the various aspects of my personality
• May be made of these, about a thousand subjects
• Subjects' setback crossing the border
• School assignments
• These subjects - about a thousand of them to start with
• That will enable them to get their subjects started