Talented man cannot do the work of a genius man.

Mixing old wine with new wine is stupidity, but mixing old wisdom with new wisdom is maturity.

Beginner knows rules, but veterans know exceptions.

Professionalism is not about what work you do, it is about how well you do the work.

Difference between a professional and amateur is like a difference between your dominant hand and non-dominant hand.

A true professional not only follows but loves the processes, policies and principles set by his profession.

You can be extraordinary in anything but not in everything.

You can achieve anything, but not everything.

An amateur should be more willing to be impressed by the professional than eager to impress the professional.