Quarles
That which is most beneficent is also most excellent; and therefore those friendships must needs be most perfect where the friends can be most useful.
Jeremy Taylor
I would not live without the love of my friends.
Keats
Every man has frequent grievances which only the solicitude of friendship will discover and remedy, and which would remain forever unheeded in the mighty heap of human calamity, were it only surveyed by the eye of general benevolence equally attractive to every misery.
Samuel Johnson
There is no man that imparteth his joys to his friend, but he joyeth the more; and no man that imparteth his griefs to his friend, but he grieveth the less.