Appear to know only this--never to fail nor fall.

All philosophy lies in two words, sustain and abstain.

Have the wisdom to know what cannot be changed, and the strength to change what can.

Every difficulty in life presents us with an opportunity to turn inward and to invoke our own submerged inner resources. The trials we endure can and should introduce us to our strengths.

Man is not worried by real problems so much as by his imagined anxieties about real problems

What hurts this person is not the occurrence itself, for another person might not feel oppressed by this situation at all. What is hurting this person is the response he or she has uncritically adopted. It is not a demonstration of kindness or friendship to the people we care about to join them in indulging in wrongheaded, negative feelings.

We do not choose our own parts in life, and have nothing to do with those parts. Our duty is confined to playing them well.