A friend is worth all hazards we can run.
—Young
Beware, lest thy Friend learn at last to tolerate one frailty of thine, and so an obstacle be raised to the progress of thy love.
—Henry D. Thoreau
Nothing is more dangerous than an imprudent friend; better to have to deal with a prudent enemy.
—La Fontaine
I hate the prostitution of the name of friendship to signify modish and worldly alliances.
—Emerson
Old friends are the great blessings of one’s latter years. Half a word conveys one’s meaning. They have memory of the same events, and have the same mode of thinking. I have young relations that grow upon me, for my nature is affectionate, but can they grow old friends? My age forbids that. Still less can they grow companions. Is it friendship to explain half one says? One must relate the history of one’s memory and ideas; and what is that to the young but old stories?
—Horace Walpole