Black holes are where God divided by zero. (Steven Wright)

All truth passes through three stages. First, it is ridiculed.Second, it is violently opposed. Third, it is accepted as beingself-evident. (Arthur Schopenhauer)

A mathematician is a device for turning coffee into theorems. (Paul Erdos)

Be nice to people on your way up because you meet them on your way down. (Jimmy Durante)

It is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring. (Carl Sagan)