Don’t be afraid to fail. The greatest failure of all is not to act when action is needed.
John WoodenThe greatest single achievement of nature to date was surely the invention of the molecule DNA.
Lewis ThomasThe greatest risk to man is not that he aims too high and misses, but that he aims too low and hits.
MichaelangeloBecause normal human activity is worse for nature than the greatest nuclear accident in history.
Martin Cruz Smith