Accepted Quote by John Boyle O'Reilly

Friendship is to be purchased only by friendship. A man may have authority over others, but he can never have their hearts but by…

— Anonymous

Trusting no man as his friend, he could not recognize his enemy when the latter actually appeared.

— Nathaniel Hawthorne

If a man does not make new acquaintances as he advances through life, he will soon find himself left alone. A man, sir, should…

— Samuel Johnson

As a matter of self-preservation, a man needs good friends or ardent enemies, for the former instruct him and the latter take him to…

— Diogenes

Friendship with a man is friendship with his virtue.

— Mencius

One man envies the success in life of another, and hates him in secret; nor is he willing to give him good advice when…

— Herodotus

Trust is the core of human relationships, of gregariousness among men. Friendship, a puzzle to the syllogistic and critical mentality, is not based on…

— Abraham Joshua Heschel

“We take other men's knowledge and opinions upon trust; which is an idle and superficial learning. We must make it our own. We are…

— Michel de Montaigne

Friendship should be surrounded with ceremonies and respects, and not crushed into corners. Friendship requires more time than poor busy men can usually command.

— Ralph Waldo Emerson

“Dissipated men need one trustworthy friend.”

— Thornton Wilder

For most men friendship is a faithless harbor.

— Sophocles

Unreal friendship may turn to real But real friendship, once ended, cannot be mended

— Anonymous