A scientific man ought to have no wishes, no affections, - a mere heart of stone.
Enthusiasm... the sustaining power of all great action.
I feel as if I were a piece in a game of chess, when my opponent says of it: That piece cannot be moved.
Thought is free.
He who would accomplish little must sacrifice little; he who would achieve much must sacrifice much; he who would attain highly must sacrifice greatly.
That which can be asserted without evidence, can be dismissed without evidence.
Freedom is from within.
Tell me thy company, and I shall tell thee what thou art.
Wine is wonderful stuff. But so many people are put off by the snobbery of it.
The death of a beautiful woman, is unquestionably the most poetical topic in the world.
When a man is tired of London, he is tired of life; for there is in London all that life can afford.
Keep things at arm's length... If you let anything come too near you want to hold on to it. And there is nothing a man can hold on to.
Common looking people are the best in the world: that is the reason the Lord makes so many of them.
When you get to a certain age, there is no coming back.
Anything that makes weak - physically, intellectually and spiritually, reject it as poison.
A place for everything, and everything in its place.
A stale article, if you dip it in a good, warm, sunny smile, will go off better than a fresh one that you've scowled upon.
Until we're educating every kid in a fantastic way, until every inner city is cleaned up, there is no shortage of things to do.
In the United States today, we have more than our share of the nattering nabobs of negativism.
The cure for boredom is curiosity.There is no cure for curiosity.
Extraordinary claims require extraordinary evidence.