A quotation by Lev Landau
Wir Mathematiker sind alle ein biszchen meschugge.
We mathematicans are all a bit crazy.
We see too big
None of us has ever seen an atom,
and we do not even have any kind of inner feeling
that can help us visualize atomic events.
The discovery of quantum mechanics
and of the principle of uncertainty
has shown that man can tear himself away
from deeply rooted notions,
and accept something that is beyond his power
Cosmologists are often wrong, but never in doubt.