Collaboration in mathematics is essential; the exchange of ideas leads to breakthroughs that no single mind could achieve alone.
What seems to us as bitter trials are often blessings in disguise
You have to be willing to fail to be successful.
And when they leave,they take your life of details with them. You are expected to move on again, but you don't remember what it was that moved you, because no one's asked you in so long. Not even yourself.