The Most Precious Things In Life Are

Most Of The Fundamental Ideas Of Science Are Essentially Simple, And May, As A Rule, Be Expressed In A Language Comprehensible To Everyone.

A Little Knowledge Is A Dangerous Thing. So Is A Lot.

All Our Thinking Is Of This Nature, A Free Play With Concepts.

Mere Thinking Cannot Reveal To Us The Highest Purpose.

Do Not Grow Old, No Matter How Long You Live.