There are two tragedies in life. One is to lose your heart's desire. The other is to gain it.
Some men see things as they are and ask why. Others dream of things that never were and ask why not.
A life spent making mistakes is not only more honourable, but more useful than a life spent doing nothing.
The power of accurate observation is frequently called cynicism by those who have not got it.
Success does not consist in never making mistakes but in never making the same one a second time.