1. The person who reads too much and uses his brain too little will fall into lazy habits of thinking.
2. Believe those who are seeking the truth. Doubt those who find it.
3. It is the mark of an educated mind to be able to entertain a thought without accepting it.
4. I’d rather live with a good question than a bad answer.
5. We learn something every day, and lots of times it’s that what we learned the day before was wrong.
6. I have made this letter longer than usual because I lack the time to make it shorter.
7. Don’t ever wrestle with a pig. You’ll both get dirty, but the pig will enjoy it.
8. An inventor is simply a fellow who doesn’t take his education too seriously.
9. Asking a working writer what he thinks about critics is like asking a lamppost how it feels about dogs.
10. Better to write for yourself and have no public, than to write for the public and have no self.
11. Never be afraid to laugh at yourself, after all, you could be missing out on the joke of the century.
12. I am patient with stupidity but not with those who are proud of it.
13. Normal is getting dressed in clothes that you buy for work and driving through traffic in a car that you are still paying for – in order to get to the job you need to pay for the clothes and the car, and the house you leave vacant all day so you can afford to live in it.
14. The cure for boredom is curiosity. There is no cure for curiosity.
15. Advice is what we ask for when we already know the answer but wish we didn’t.
16. Some people like my advice so much that they frame it upon the wall instead of using it.
17. The trouble with the rat race is that even if you win, you’re still a rat.
18. Never ascribe to malice, that which can be explained by incompetence.
19. Imagination was given to man to compensate him for what he is not, and a sense of humor was provided to console him for what he is.
20. When a person can no longer laugh at himself, it is time for others to laugh at him.