Peace, commerce and honest friendship with all nations; entangling alliances with none.

Thomas Jefferson

Peace and friendship with all mankind is our wisest policy, and I wish we may be permitted to pursue it.

Thomas Jefferson

Friendship is but another name for an alliance with the follies and the misfortunes of others. Our own share of miseries is sufficient: why enter then as volunteers into those of another? 

Thomas Jefferson

Of all the things which wisdom provides to make us entirely happy, much the greatest is the possession of friendship.

Epicurus

Friendship, like the immortality of the soul, is too good to be believed.

Ralph Waldo Emerson

What sweetness is left in life, if you take away friendship? Robbing life of friendship is like robbing the world of the sun. A true friend is more to be esteemed than kinsfolk. 

Marcus Tulius Cicero

The rule of friendship means there should be mutual sympathy between them, each supplying what the other lacks and trying to benefit the other, always using friendly and sincere words. 

Marcus Tulius Cicero

Love is the attempt to form a friendship inspired by beauty.

Marcus Tulius Cicero