Science does not give us absolute and final certainty. It only gives us assurance within the limits of our mental read more

Science does not give us absolute and final certainty. It only gives us assurance within the limits of our mental abilities and the prevailing state of scientific thought.

Conscious and unconscious experiences do not belong to different compartments of the mind; they form a continuous scale of gradations, read more

Conscious and unconscious experiences do not belong to different compartments of the mind; they form a continuous scale of gradations, of degrees of awareness.

Insanity -- a perfectly rational adjustment to an insane world.

Insanity -- a perfectly rational adjustment to an insane world.

We must respect the other fellow's religion, but only in the sense and to the extent that we respect his read more

We must respect the other fellow's religion, but only in the sense and to the extent that we respect his theory that his wife is beautiful and his children smart.

Great innovators and original thinkers and artists attract the wrath of mediocrities as lightning rods draw the flashes.

Great innovators and original thinkers and artists attract the wrath of mediocrities as lightning rods draw the flashes.

He who will not reason, is a bigot; he who cannot is a fool; and he who dares not is read more

He who will not reason, is a bigot; he who cannot is a fool; and he who dares not is a slave.

It is nobler to convert souls, than to conquer kingdoms.

It is nobler to convert souls, than to conquer kingdoms.

The main fuel to speed the world's progress is our stock of knowledge, and the brake is our lack of read more

The main fuel to speed the world's progress is our stock of knowledge, and the brake is our lack of imagination.

It is not love of self but hatred of self which is at the root of the troubles that afflict read more

It is not love of self but hatred of self which is at the root of the troubles that afflict our world.