Letters 56.13

This man in his first state is wise; he blenches neither at the brandished spear, nor at the clashing armour of the serried foe, nor at the din of the stricken city. This man in his second state lacks knowledge fearing for his own concerns, he pales at every sound; any cry is taken for the battle-shout and overthrows him; the slightest disturbance renders him breathless with fear. It is the load that makes him afraid.

Seneca, Letters to Lucilius 56.13, translated by Richard Mott Gummere