Two 19th century truths about selling your ideas

From two Frenchmen who lived in the 19^th century comes

"...everything has to come in its own time in order to win its way. A solution given lightly, prior to the complete elucidation of the question, would be a retarding force, rather than a means to advancement."

Allan Kardec (1804-1869)

and

"An invasion of armies can be resisted, but not an idea whose time has come."

Victor Hugo (1802-1885)