How you do anything is how you do everything. Your "character" or "nature" just refers to how you handle all the day-to-day things in life, no matter how small.
Programming languages are like girlfriends: The new one is better because *you* are better.
Don’t pursue business just for your own gain. Only answer the calls for help.
You can't please everyone, so proudly exclude people.
Making a company is a great way to improve the world while improving yourself.
The most important lesson is probably to spend less than you earn.