The errors which arise from the absence of facts are far more numerous and more durable than those which result from unsound reasoning respecting true data.

I have no desire to write my own biography, as long as I have strength and means to do better work.

On two occasions I have been asked, 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question.

For one person who is blessed with the power of invention, many will always be found who have the capacity of applying principles.

The first steps in the path of discovery, and the first approximate measures, are those which add most to the existing knowledge of mankind.

Mechanical Notation ... I look upon it as one of the most important additions I have made to human knowledge. It has placed the construction of machinery in the rank of a demonstrative science. The day will arrive when no school of mechanical drawing will be thought complete without teaching it.

There are few circumstances which so strongly distinguish the philosopher, as the calmness with which he can reply to criticisms he may think undeservedly severe.