Through laziness and cowardice a large part of mankind, even after nature has freed them from alien guidance, gladly remain immature. It is because of laziness and cowardice that it is so easy for others to usurp the role of guardians. It is so comfortable to be a minor!

Science is organized knowledge. Wisdom is organized life.

The existence of the Bible is the greatest blessing which humanity ever experienced.

I am myself by inclination an investigator.

Always recognize that human individuals are ends, and do not use them as means to your end.

One is not rich by what one owns, but more by what one is able to do without with dignity.

The question is not so much whether there is life on Mars as whether it will continue to be possible to live on Earth