Clearly, there was profit for him also in the restlessness which governed his father's movements and which threw the boy into quickening collision with places, people, and ideas at a rate at which such contacts are not vouchsafed to many schoolboys. From so far back as his nineteenth year (there is no evidence to go by before that) William was blessed with an effortless and confirmed cosmopolitanism of consciousness; and he had attained to an acquaintance with English and French reviews, books, paintings, and public affairs which was remarkable not only for its happy ease, but, in one so young, for its wide range. The letters which follow show clearly with what expert observation he responded, all his life, to changes of scene and to the differences between peoples and environments. The fascination of these differences never failed for him when he traveled, and his letters from abroad give such voluminous proof of his own addiction to what he somewhat harshly called "the most barren of exercises, the making of international comparisons," that the problem of the editor is to control rather than to emphasize the evidence. He began young to be a wide reader; soon he became a wide reader in three languages. Above all, he was encouraged early to trust his own impulse and pursue his own bent. Probably his active and inquiring intelligence could not have been permanently cribbed and confined by any schooling, no matter how narrow and rigorous. But, as nothing was to be more remarkable about him in his maturity than the easy assurance with which he passed from one field of inquiry to another, ignoring conventional bounds and precincts, never losing his freshness of tone, shedding new light and encouragement everywhere, so it is impossible not to believe that the influences and circumstances which combined in his youth fostered and corroborated his native mobility and detachment of mind.