Sunday Question: Can we know all things?

My husband was telling me about some changes at McMaster University. Their old logo showed three books: two open and one closed. The open books symbolised the world that we can know and explore fully, (art and science I believe?) while the closed book demonstrated that there were somethings that man cannot with his own reason know. This logo has now changed to one open books. The leadership of the university is now declaring that we are capable of knowing all things. They may also be making a comment on all disciplines being the same. What do you think?