"Experts themselves must also have a sense of awe *:
Stay within your comfort zone in your field: Speak freely within your areas of expertise.
Remain silent when outside your field of expertise: Never be a know-it-all expert, or you will lose credibility, and nobody will trust you.
* [ awe: "Awe is an intense feeling of admiration, reverence, or fear, often mixed with wonder, caused by something grand, sublime, or beyond one's understanding. It is a profound sense of respect or admiration for something that inspires feelings of reverence or fear due to its beauty, power, or magnitude."]