Below lie several quotes that resonate with me. Whether they display intellect, passion, or humility, I find each of these quotes inspiring.
"Pure mathematics is, in its way, the poetry of logical ideas."
— Albert Einstein, a tribute in the New York Times to Emmy Noether after her passing (Link)
"If people do not believe that mathematics is simple, it is only because they do not realize how complicated life is."
— John von Neumann, in a keynote presentation at the first national meeting of the Association for Computing Machinery (Link)
"The introduction of the cipher 0 or the group concept was general nonsense too, and mathematics was more or less stagnating for thousands of years because nobody was around to take such childish steps ..."
— Alexander Grothendieck, in a letter to Ronald Brown (Link)