She had always suffered from a curious fear of what was going to happen round the next corner. Even when life went smoothly and nothing occurred to justify her vague apprehensions, they did not altogether disperse. She had tried to face these fears and conquer them, but she could never do so entirely, she could only strain forward into the darkness of the future, expecting and fearing the unknown. She was brave in the face of dangers she could see, but she could not arm herself against shadows. These fears were her weakness.
D.E. Stevenson, Smouldering Fire
brave, fear, unknown, weakness