From the same scientists that keep telling us the universe is finite...
publish or perish. humility, integrity and dilligence seem to be rare qualities among these types, after all they are the brightest of the bright, and a deficit of knowledge is for them a deficit of character.
but these humble traits along with a burning curiosity about the world and how it works, and most often with a firm belief in God, have been the essential traits of the scientists who have most successfully read the book of nature. Gregor Mendel comes to mind along with many such others.