I have steadily endeavored to keep my mind free so as to give up any hypothesis, however much beloved (and read more

I have steadily endeavored to keep my mind free so as to give up any hypothesis, however much beloved (and I cannot resist forming one on every subject), as soon as the facts are shown to be opposed to it.

Evolution as such is no longer a theory for a modern author. It is as much a fact as that read more

Evolution as such is no longer a theory for a modern author. It is as much a fact as that the earth revolves around the sun.

Sin lies only in hurting others unnecessarily. All other "sins" are invented nonsense.

Sin lies only in hurting others unnecessarily. All other "sins" are invented nonsense.

You can shoot the tiger, or stay out of his way, but you cannot pronounce him a vegetarian.

You can shoot the tiger, or stay out of his way, but you cannot pronounce him a vegetarian.

For every social wrong there must be a remedy. But the remedy
can be nothing less than the abolition read more

For every social wrong there must be a remedy. But the remedy
can be nothing less than the abolition of the wrong.

Controversy is only dreaded by the advocates of error.

Controversy is only dreaded by the advocates of error.

A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because read more

A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die out, and a new generation grows up that is familiar with it.

Progress cannot be organized.

Progress cannot be organized.

Some tribes [of monkeys] have taken to washing potatoes in the river before eating them, others have not. Sometimes migrating read more

Some tribes [of monkeys] have taken to washing potatoes in the river before eating them, others have not. Sometimes migrating groups of potato-washers meet non-washers, and the two groups watch each other's strange behavior with apparent bewilderment. But unlike the inhabitants of Lilliput, who fought holy crusades over the question at which end to break the egg, the potato-washing monkeys do not go to war with the non-washers, because the poor creatures have no language which would enable them to declare washing a diving commandment and eating unwashed potatoes a deadly heresy.