People with good intentions make promises. But people with good character keep them. Keep your promises, and I promise to keep my good character. Do we understand the logic here. A promise is a promise :-) *m
"Education is important, but big biceps are importanter" is not wrong because "importanter" is not a word, there also needs to be a period and education needs to be capitalized. Grammar win: Education is important, but big biceps are more important.