He's simply got the instinct for being unhappy highly developed.
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' (I found it!) but 'That's funny ...'
Doubt 'til thou canst doubt no more...doubt is thought and thought is life. Systems which end doubt are devices for drugging thought.
Let me tell you, quite frankly, it took a while and a lot of therapy to get here.
Never make a defense or an apology until you are accused.
We don't get offered crises, they arrive.
Never eat more than you can lift.