“Depression is not generalized pessimism, but pessimism specific to the effects of one's own skilled action.”
“Pessimism has its own secret Share of optimism in it too.”
“Pessimism is a luxury of good times. In difficult times, pessimism is a self- fulfilling, self-inflicted death sentence.”
“Pessimism is the luxury of the powerful.”
“Pessimism of the spirit; optimism of the will.”
“Pessimism of the intellect, optimism of the will.”