Science fiction author Robert A. Heinlein quotes for the day:

Always listen to experts. They'll tell you what can't be done, and why. Then do it.

and

Throughout history, poverty is the normal condition of man. Advances which permit this norm to be exceeded — here and there, now and then — are the work of an extremely small minority, frequently despised, often condemned, and almost always opposed by all right-thinking people. Whenever this tiny minority is kept from creating, or (as sometimes happens) is driven out of a society, the people then slip back into abject poverty.

This is known as "bad luck."

Both of these are from his 1973 novel, Time Enough for Love. One can read a bunch more of his quotes at Wikiquote.