An expert is a person who has made all the mistakes that can be made in a very narrow field.
Ignorance more frequently begets confidence than does knowledge: it is those who know little, and not those who know much, who so positively assert that this or that problem will never be solved by science.
I strongly believe that fundamental science cannot be driven by instructional, industrial and government or military pressures.
I don’t believe in taking right decisions. Take decisions and make them right.
A concept is a brick. It can be used to build a courthouse of reason. Or it can be thrown through the window.
Refusal to believe until proof is given is a rational position; denial of all outside of our own limited experience is absurd.
Every cause produces more than one effect.
The first rule is not to lose. The second rule is not to forget the first rule.
Give a girl an education and introduce her properly into the world, and ten to one but she has the means of settling well, without further expense to anybody.
Keep in mind my friend, if an answer is not rational, then it is not an answer, but a delusion.”