"Named to the Yale faculty in 1945 as assistant professor of , he eventually became director of Yale's graduate course in |city planning when it was initiated in 1950 and which he directed for the next decade. In 1962 he became professor of city planning and in 1965 he was named chairman of the department. In September 1969, as the result of a major reorganization of Yale's School of Art and Architecture, which split the school into two divisions, Professor Tunnard was appointed director of studies in planning, and remained in that post until his retirement in 1975."

"The garden has always been subject to two main influences—the outer influence from the and the inner from the house."

"The recent obituaries of gave a measure of tribute to his engineering innovations at . It was undoubtedly he who conceived of tracks, bridges and buildings all in a single structural entity; the double-deck track fan to save space and the loop connection to circulate the trains. It was he who worked out all the details with the first official architects, , but to these winners of the competion for the new station goes the credit for the device for looping on "exterior circumferential elevated driveways" instead of through the centre of the station athwart the concourse as Wilgus had suggested."

"You lose a lot of friends, I look upon this as a life cycle."

"The freedom to create, the freedom to think differently, was unlimited."

"We have, as I have pointed out again and again, a great gift of nature in our landscape."

"Landscape architects are a combination of artists, designers, choreographers and scientists; they must also be leaders, especially in dealing with the effects of climate change."

"I work with a concept driven by the idea that people want to be surrounded by nature—it is in our genes."

"When I got my first commission after Habitat, for a few weeks I couldn't draw.""

"Architecture is not about building the impossible, which we can do if we have enough money and enough tools and enough computers, it is about building what is appropriate and about attaining beauty through such an approach. I describe this premise as "inherent buildability and I believe it is central to what I do."