Success is the child of audacity.

I am prepared for the worst, but hope for the best.

What are the most brilliant of our chymical discoveries compared with the invention of fire and the metals?

King Louis Philippe once said to me that he attributed the great success of the British nation in political life to their talking politics after dinner.

Popular privileges are consistent with a state of society in which there is great inequality of position. Democratic rights, on the contrary, demand that there should be equality of condition as the fundamental basis of the society they regulate.

You must originate, and you must sympathize; yon must possess, at the same time, the habit of communicating and the habit of listening. The union is rather rare, but irresistible.

The pursuit of science leads only to the insoluble.