"He sido un hombre afortunado en la vida, nada me ha sido facil." "I've been a fortunate man in life, nothing has come easy"

Religious illusion must bow to scientific truth. It is in total error about the nature of the true world. Only science is not an illusion.

Poets are masters of us ordinary men, in knowledge of the mind, because they drink at streams which we have not yet made accessible to science.

Where questions of religion are concerned, people are guilty of every possible sort of dishonesty and intellectual misdemeanor.

Adolescent stage in the development of the human race from which humanity should free itself.

In every age immorality has found no less support in religion than morality has. If the achievements of religion in respect to man's happiness, susceptibility to culture and moral control are no better than this, the question cannot but arise whether we are not overrating its necessity for mankind, and whether we do wisely in basing our cultural demands upon it.

The meager satisfaction that man can extract from reality leaves him starving.