Possible Clues:

• Resistant to elements
• Able to keep out wind and rain
• How a free port transported seal?
• Is unaffected by the elements in, for example, global warming evidence
• Resistant to rain, etc
• Could have forecasted this was created by a philosopher keeping some elements out of The House
• How a free port must work to provide elementary protection?
• Won't let anything in, as encompasses a number of elements one associates with philosopher
• Designed for protection from the elements
• Come through evidence as won't rain on someone's parade, in a manner of speaking