Lecture IV

But remember that men to-day can prepare themselves to look into the spiritual world by apprehending with their healthy human reason what spiritual science has to offer. The effort applied in study that lets itself be guided by healthy human reason can be part of the struggle which leads eventually to vision of the spiritual world. Many tendencies will have to be overcome, but for men of to-day the fundamental difficulty is that when they want to understand spiritual science they have to battle against their own granite-like skulls. If the human skull were less hard, less granite-like, spiritual science would be far more widely accepted at the present time. Infinitely more effective than any philistine avoidance of the Ahrimanic powers would be to battle against Ahriman through sincere, genuine study of the content of spiritual science. For then man would gradually come to perceive spiritually the danger that must otherwise befall the earth physically, of being rigidified into granite-like density.