Friedrich Nietzsche - Philosopher
A thinker sees his own actions as experiments and questions as attempts to find out something. Success and failure are for him answers above all.
Napoleon Hill - American self-help author. He is known best for his book Think and Grow Rich which is among the 10 best selling self-help books of all time
Every adversity, every failure, and every heartache, carries with it the Seed of an equivalent or greater Benefit.
Oliver Goldsmith - Anglo-Irish novelist, playwright and poet
Our greatest glory consists not in never falling, but in rising every time we fall.