Graffiti from Lamont Library.
On a desk in Lamont Library:

[in pink] You're ugly
[in black] Why is Lamont beautiful and Cabot ugly?
[in different handwriting] One word - modernism. It's an idea where form + function just didn't meld too well.

My personal opinion (which, unfortunately, is not expressed on the walls of Lamont itself) is that Lamont Library was built in the post-war period, while Cabot Science Library, like the rest of the Science Center, was built in the 1970s, a period lacking in good aesthetics.[1]
[1] Other examples of things from the 1970s that never should have been created: Shag carpeting, disco, and Mather House.