A small error in the former will produce an enormous error in the latter.

Point set topology is a disease from which the human race will soon recover.

It is by logic that we prove, but by intuition that we discover. To know how to criticize is good, to know how to create is better.

There are no solved problems; there are only problems that are more or less solved.

The scientist does not study nature because it is useful; he studies it because he delights in it, and he delights in it because it is beautiful.

Doubt everything or believe everything: these are two equally convenient strategies. With either we dispense with the need for reflection.

If nature were not beautiful, it would not be worth knowing, and if nature were not worth knowing, life would not be worth living

It is through science that we prove, but through intuition that we discover.

Geometry is the art of correct reasoning from incorrectly drawn figures.

One geometry cannot be more true than another; it can only be more convenient.

It is far better to foresee even without certainty than not to foresee at all.

No one can be good for long if goodness is not in demand.

The best part about playing a mom is that people hug moms. I get hugs all the time. It really makes hard days a lot easier, and easy days are downright joyous.

A postsecondary education is the ticket to economic success in America.

Pretty soon the only people left without a girlfriend will be me and Wendell the school janitor, and he smells like windex." "At least you know he's still available.

One can remain alive long past the usual date of disintegration if one is unafraid of change, insatiable in intellectual curiosity, interested in big things, and happy in small ways.

Planning trip around the globe, that is in my room.

Prosperity Comes When You Do the Right Things with Your Life

America is a nation of immigrants, and we should treat those who come to our country with dignity and respect.

There may be no less original idea than the notion that our hearts hold dominion over our heads.

Me? I slept like the dead, which I hoped wasn’t a sign of things to come.