Nature does nothing in vain.

Aristotle
Profession: Philosopher
Nationality: Greek

Some suggestions for you :
Courage is the first of human qualities because it is the quality which guarantees the others.
With regard to excellence it is not enough to know but we must try to have and use it.
Shall we not, like archers who have a mark to aim at, be more likely to hit upon what is right?
Poetry utters universal truths, history particular statements.