Satisfaction consists in freedom from pain, which is the positive element of life.Arthur Schopenhauer
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
Suffering by nature or chance never seems so painful as suffering inflicted on us by the arbitrary will of another.Arthur Schopenhauer
All pain is either severe or slight, if slight, it is easily endured; if severe, it will without doubt be brief.Cicero