What was once thought can never be unthought.

What was once thought can never be unthought.

It's only a thought, and a thought can be changed.

It's only a thought, and a thought can be changed.

If I have done the public any service, it is due to my patient thought.

If I have done the public any service, it is due to my patient thought.

Men use thought only as authority for their injustice, and employ speech only to conceal their thoughts.

Men use thought only as authority for their injustice, and employ speech only to conceal their thoughts.

Thoughts are the shadows of our sensations -- always darker, emptier, simpler than these.

Thoughts are the shadows of our sensations -- always darker, emptier, simpler than these.

In the information society, nobody thinks. We expect to banish paper, but we actually banish thought.

In the information society, nobody thinks. We expect to banish paper, but we actually banish thought.

It is astonishing what an effort it seems to be for many people to put their brains definitely and systematically read more

It is astonishing what an effort it seems to be for many people to put their brains definitely and systematically to work.

Thought is the wind, knowledge the sail, and mankind the vessel.

Thought is the wind, knowledge the sail, and mankind the vessel.

Beware when the great God lets loose a thinker on this planet.

Beware when the great God lets loose a thinker on this planet.