History shows that the human mind, fed by constant accessions of knowledge, periodically grows too large for its theoretical coverings, and bursts them asunder(別々になる、別れてばらばらになる)to appear in new habiliments(装身具、活動に必要な装置), as the feeding and growing grub(幼虫), at intervals, casts(古くなった皮を落とす)its too narrow skin and assumes(身に着ける)another.