Webster's 1828 Dictionary
noun 1. One who is attached to another by affection; one who entertains for another sentiments of esteem, respect and affection, which lead him to desire his company, and to seek to promote his happiness and prosperity; opposed to foe or enemy. 2. One not hostile; opposed to an enemy in war. 4. An attendant; a companion. 7. A term of salutation; a familiar compellation.
"The word philadelphia means 'human affection, brotherly love.' It means being an affectionate friend. Samuel Coleridge wrote a poem titled "Youth and Age" with the line, 'Friendship is a sheltering tree.' That is a wonderful word picture. Friends are those whose lives are like branches. The provide shade, they provide refuge from the demanding, irritating, and searing rays of the hot sun. You can find comfort by them. You can find strength near them. They are tree-like in that they bear fruit that provides nourishment and encouragement..."
--Charles R. Swindoll, quoted in his book The Tardy Oxcart (pgs. 220-221)
"A friend loves at all times, and a brother is born for a difficult time."
"A man with many friends may be harmed, but there is a Friend who stays closer than a brother."