First and foremost, be faithful to your superiors, keep all promises, refuse the friendship of all who are not like you; and if you have made a mistake, do not be afraid of admitting the fact and amending your ways.
It is the steady and merciless increase of occupations, the augmented speed at which we are always trying to live, the crowding of each day with more work than it can profitably hold, which has cost us, among other things, the undisturbed enjoyment of friends. Friendship takes time, and we have no time to give it.
A man cannot speak to his son, but as a father; to his wife, but as a husband; to his enemy, but upon terms: whereas a friend may speak, as the case requires, and not as it sorteth with the person.