I agree with Smokepole. If you are hiking in steep terrain your feet (and the rest of you) will be sweating. Be sure to wear liner socks under a medium weight wool sock to avoid blisters. Bring spare socks to change. If you only have one pair of boots, wear a vapor barrier sock over your outer sock. That way your boots will stay dry inside. Your feet will sweat more, but at least you will be able to change into dry socks and have dry boots.
