Progress is impossible without change, and those who cannot change their minds cannot change anything.
Progress is impossible without change, and those who cannot change their minds cannot change anything.
Success does not consist in never making mistakes but in never making the same one a second time.
Some men see things as they are and ask why. Others dream of things that never were and ask why not.
The moment we want to believe something, we suddenly see all the arguments for it, and become blind to the arguments against it.
A life spent making mistakes is not only more honourable, but more useful than a life spent doing nothing.