"I had a feeling once about Mathematics--that I saw it all. Depth beyond depth was revealed to me--the Byss and Abyss. I saw--as one might see the transit of Venus or even the Lord Mayor's Show--a quantity passing through infinity and changing its sign from plus to minus. I saw exactly why it happened and why the tergiversation was inevitable but it was after dinner and I let it go."
Anyone who cannot cope with mathematics is not fully human. At best he is a tolerable subhuman who has learned to wear shoes, bathe, and not make messes in the house.
-Robert Heinlein, Time Enough for Love