It may be a cold, clammy thing to say, but those that treat friendship the same as any other selfishness seem to get the most out of it.
I believe in grumbling; it is the politest form of fighting known.
A really busy person never knows how much he weighs.
We must be truthful and fair in the ordinary affairs of life before we can be truthful and fair in patriotism and religion.
The sounder your argument, the more satisfaction you get out of it.
Don't abuse your friends and expect them to consider it criticism.