Who said “There is not a fiercer hell than the failure in a great object.”?

“Every failure is a step to success.”

“Failure is not fatal, but failure to change might be.”

“He who has never failed somewhere, that man can not be great.”

“Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.”

“If it fails, admit it frankly and try another. But above all, try something.”

“I always made an awkward bow.”

“I would sooner fail than not be among the greatest.”

“Beauty is truth, truth beauty -- that is all ye know on earth, and all ye need to know.”

“I am certain of nothing but the holiness of the heart's affections, and the truth of imagination.”

“Nothing ever becomes real till it is experienced -- even a proverb is no proverb to you till your life has illustrated it.”

“Praise or blame has but a momentary effect on the man whose love of beauty in the abstract makes him a severe critic on his own works.”