W. B. Yeats on good and evil

Turning and turning in the widening gyre
The falcon cannot hear the falconer;
Things fall apart; the centre cannot hold;
Mere anarchy is loosed upon the world

The darkness drops again but now I know
That twenty centuries of stony sleep
Were vexed to nightmare by a rocking cradle,
And what rough beast, its hour come round at last,
Slouches towards Bethlehem to be born?

I will arise and go now, and go to Innisfree,
And a small cabin build there, of clay and wattles made:
Nine bean rows will I have there, a hive for the honey bee,
And live alone in the bee-loud glade.

All that is required for evil to prevail is for good men to do nothing.

Edmund Burke1729–1797

Men never do evil so completely and cheerfully as when they do it from religious conviction.

Blaise Pascal1623–1662

• Anti-Religion

The world is a dangerous place, not because of those who do evil, but because of those who look on and do nothing.

Albert Einstein1879–1955