A person who doubts himself is like a man who would enlist in the ranks of his enemies and bear arms against himself. He makes his failure certain by himself being the first person to be convinced of it.

You see Africa makes a fool of our idea of justice. It makes a farce of our idea of equality. It mocks our pieties. It doubts our concern. It questions our commitment. Because there is no way we can look at what's happening in Africa and if we're honest conclude that it would ever be allowed to happen anywhere else.

Though I am a Catholic a professing one I have serious doubts about the survival of the human personality after death.

Prohibit the taking of omens and do away with superstitious doubts. Then until death itself comes no calamity need be feared.

Jealousy is bred in doubts. When those doubts change into certainties then the passion either ceases or turns absolute madness.