As long as you are lucky, you will have many friends; if cloudy times appear, you will be alone. -Donec eris felix, multos numerabis amicos; tempora si fuerint nubila, solus eris
It is not merely true that a creed unites men. Nay, a difference of creed unites men - so long as it is a clear difference. A boundary unites. Many a magnanimous Moslem and chivalrous Crusader must have been nearer to each other, because they were both dogmatists, than any two agnostics. "I say God is One," and "I say God is One but also Three," that is the beginning of a good quarrelsome, manly friendship.
There are three friendships which are advantageous, and three which are injurious. Friendship with the upright; friendship with the sincere; and friendship with the man of much observation: these are advantageous. Friendship with the man of specious airs; friendship with the insinuatingly soft; and friendship with the glib-tongued: these are injurious.
Once more unto the breach, dear friends, once more; Or close the wall up with our English dead! In peace there's nothing so becomes a man As modest stillness and humility: But when the blast of war blows in our ears, Then imitate the action of the tiger.