Men never cling to their dreams with such tenacity as at the moment when they are losing faith in them and know it, but do not dare confess it to themselves.
Nothing in the world can take the place of persistence. Talent will not; nothing is more common than unsuccessful men of talent. Genius will not; unrewarded genius is almost a proverb. Education will not; the world is full of educated derelicts. Persistence and determination alone are omnipotent.
All happiness depends on courage and work. I have had many periods of wretchedness, but with energy and above all with illusions, I pulled through them all.
In war, as in life, it is often necessary, when some cherished scheme has failed, to take up the best alternative open, and if so, it is folly not to work for it with all your might.