"It is a law of nature that fainthearted men should be the fruit of luxurious countries, for we never find that the same soil produces delicacies and heroes." ― Herodotus.
Perhaps Herodotus was not wrong to suggest that where the land is harsh the people are more likely to become heroes. Comfort is certainly not the key to unlocking the highest dormant potentials - in flora and fauna alike. We all know that those who challenge themselves are able to withstand greater setbacks, and so realize greater visions.