Nature shows that with the growth of intelligence comes increased capacity for pain, and it is only with the highest degree of intelligence that suffering reaches its supreme point.

Arthur Schopenhauer

They who go Feel not the pain of parting; it is they Who stay behind that suffer.

Henry Wadsworth Longfellow

Evil being the root of mystery, pain is the root of knowledge.

Simone Weil

A beautiful thing never gives so much pain as does failing to hear and see it.

Michelangelo

Do something every day that you don't want to do. This is the golden rule for acquiring the habit of doing your duty without pain.

Mark Twain

There are minds so impatient of inferiority that their gratitude is a species of revenge, and they return benefits, not because recompense is a pleasure, but because obligation is a pain

Samuel Johnson

A wise man will make haste to forgive, because he knows the true value of time, and will not suffer it to pass away in unnecessary pain.

Samuel Johnson

Death is the king of this world: 'Tis his park where he breeds life to feed him. Cries of pain are music for his banquet.

George Eliot

After great pain, a formal feeling comes. The Nerves sit ceremonious, like tombs.

Emily Dickinson