Auguste Comte

To understand a science, it is necessary to know its history.

Indeed, every true science has for its object the determination of certain phenomena by means of others, in accordance with the relations which exist between them.

Know yourself to improve yourself.

We were making the first step out of the age of chemistry and physics, and into the age of biology.

I don't see any possibility of Britain and the U.S. allowing a sovereign independent Iraq; that's almost inconceivable.

We were making the first step out of the age of chemistry and physics, and into the age of biology.