Collective fear stimulates herd instinct, and tends to produce ferocity toward those who are not regarded as members of the herd.

The really useful education is that which follows the direction of the child's own instinctive interests, supplying knowledge for which it is seeking, not dry, detailed information wholly out of relation to its spontaneous desires.

Conquer the world by intelligence, and not merely by being slavishly subdued by the terror that comes from it.

Why is propaganda so much more successful when it stirs up hatred than when it tries to stir up friendly feeling?

Love and knowledge led upwards to the heavens.

Envy is the basis of democracy.

All great books contain boring portions, and all great lives have contained uninteresting stretches.