The wise man is neither raised up by prosperity nor cast down by adversity; for always he has striven to rely predominantly on himself, and to derive all joy from himself.

Seneca

We are more often frightened than hurt; and we suffer more from imagination than from reality.

Seneca

What upsets people is not things themselves, but their judgements about these things.

Epictetus

Outward action and inner calm.

The Stoic Emperor

Directed attention results in precise and effective action. Divided attention results in clumsy and inconsistent action.

The Stoic Emperor

He who indulges in empty fears earns himself real fears.

Seneca