He knows nothing and thinks he knows everything. That points clearly to a political career.
A life spent making mistakes is not only more honourable, but more useful than a life spent doing nothing.
Progress is impossible without change, and those who cannot change their minds cannot change anything.
Beauty is all very well at first sight; but who ever looks at it when it has been in the house three days?
The moment we want to believe something, we suddenly see all the arguments for it, and become blind to the arguments against it.