Life isn't about finding yourself. Life is about creating yourself.
No man who is occupied in doing a very difficult thing, and doing it very well, ever loses his self-respect.
Progress is impossible without change, and those who cannot change their minds cannot change anything.
The moment we want to believe something, we suddenly see all the arguments for it, and become blind to the arguments against it.
The power of accurate observation is frequently called cynicism by those who have not got it.
Beauty is all very well at first sight; but who ever looks at it when it has been in the house three days?
Success does not consist in never making mistakes but in never making the same one a second time.