If I don't have anything to sacrifice, I don't have anything to gain. From the Bible I have learned if you want something good, you must sacrifice.

If I have nothing to sacrifice, I have nothing to gain.

I have learned to delegate.

I have learned that to have a good friend is the purest of all God's gifts, for it is a love that has no exchange of payment.

I think the main lesson that I have learned is that a good scientist is a humble scientist who is open-minded to listen to other scientists when they discover something.

I have learned that I must take a holiday at least once each year if I want to survive!