[2] Despite his circumstance, Smart attended the School of Practical Science at the University of Toronto, paying for his tuition by working as a packing manager at a local Woolworth's when he was not in class.

By 1913 he was named a partner of the law firm, which began to offer services under the name Fetherstonhaugh & Smart while continuing to be closely associated with the patent agency Fetherstonhaugh & Co.[1] In Ottawa, Smart met the prominent lawyer and politician Harold Fisher, and together they published in 1914 one of the first comprehensive treatises on Canadian patent law.

Smart turned to Oliver Mowat Biggar, then the Chief Electoral Officer of Canada, and whom he had previously met as opposing counsel in 1924.

[9] Smart purchased a summer cottage by Lake Kingsmere, in the Gatineau Hills a short drive north of Ottawa on a piece of property adjacent to the vast estates of Prime Minister William Lyon Mackenzie King.

[11] It was at this summer cottage where Smart's wife, Louie, would play hostess to a number of prominent guests who later became important figures in Canada, including Lester B. Pearson, future Prime Minister of Canada, Charles Ritchie, a civil servant and later a prominent diplomat, Graham Spry, a writer and broadcast pioneer who later helped form the Canadian Radio Broadcasting Commission and who was an important figure in the Co-operative Commonwealth Federation, and Norman Robertson, a diplomat and advisor to Mackenzie King.

Her most famous work was her semi-autobiographical poetic novel, By Grand Central Station I Sat Down and Wept, which detailed her romance with the poet George Barker.

1915), known better as Jane Marsh Beveridge, became a sculptor, composer, writer, and filmmaker who was one of the pioneers at the National Film Board of Canada.

1921), his only son, served overseas in the Canadian Forces during World War II, and later joined Smart & Biggar, eventually taking over as its managing partner.

[14] During World War II, Smart was appointed as the real property administrator for the Wartime Prices and Trade Board.