"You will find as you grow older that courage is the rarest of all qualities to be found in public life"

This quote by Benjamin Disraeli speaks with the importance of nerve in public life. He recommends that courage is an uncommon quality, and one that is significantly hard to discover as one gets older. He implies that nerve is a needed quality for those in public life, which it is often doing not have. He might be referring to the truth that those in public life typically do not have the nerve to stand up for what is right, or to make difficult choices. He might also be suggesting that guts is a quality that is often doing not have in the general public sphere, and that it is something that is required in order to make development. Ultimately, Disraeli is emphasizing the value of courage in public life, and the need for those in public life to have the nerve to make hard decisions and defend what is right.