"Of crimes — none is greater than having many desires.
Of disasters — none is greater than not knowing when one has enough.
Of defects — none brings more sorrow than the desire to attain.
Therefore, the contentment you have when you know that you have enough, is abiding contentment indeed."

Lao-Tzu (c. 550 B.C.–)

"Let us take things as we find them: let us not attempt to distort them into what they are not. We cannot make facts. All our wishing cannot change them. We must use them."

Cardinal Newman (1801–1890)

"Demand not that events should happen as you wish; but wish them to happen as they do happen, and your life will be serene."

Epictetus (55–135)