Who said "Through discipline, all things are possible."?

This quote is attributed to Alexander the Great.

Through discipline, all things are possible. - Alexander the Great

"Through discipline, all things are possible."

Alexander the Great

Military Conqueror Macedonian 356–323

"I am not afraid of an army of lions led by a sheep; I am afraid of an army of sheep led by a lion."

"There is nothing impossible to they who will try."

"Remember upon the conduct of each depends the fate of all."

"I want to take Rome with Caesar or perish with him."