failure
failure
To err is human, to forgive, divine.
An Essay on Criticism
There is only one thing that makes a dream impossible to achieve: the fear of failure.
The Alchemist
All of old. Nothing else ever. Ever tried. Ever failed. No matter. Try again. Fail again. Fail better.
Worstward Ho
Success is most often achieved by those who don't know that failure is inevitable.
Believing in Ourselves: The Wisdom of Women
Science, my lad, is made up of mistakes, but they are mistakes which it is useful to make, because they lead little by little to the truth.
Journey to the Center of the Earth