Who said "Lack of preparation is the cause of all failure."?

This quote is attributed to Herbert Spencer.

Lack of preparation is the cause of all failure. - Herbert Spencer

"Lack of preparation is the cause of all failure."

Herbert Spencer Success

Philosopher Sociologist British 1820–1903

"The great aim of education is not knowledge but action."

"Progress is not an accident but a necessity."

"The ultimate result of shielding men from the effects of folly is to fill the world with fools."

"Life is the continuous adjustment of internal relations to external relations."

"Success comes to those who never give up."

"Success is measured by happiness, not money."

"You make your own luck in this world."

"You have to be organized to be successful in anything."