Another of the qualities of science is that it teaches the value of rational thought, as well as the importance of freedom of thought; the positive results that come from doubting that all the lessons are true... Learn from science that you must doubt the experts. As a matter of fact, I can also define science another way: Science is the belief in the ignorance of experts.
Definitions are the foundation of reason. You can't reason without them.
Common sense is very uncommon.
Logic is the art of making truth prevail.
Logicians have but ill defined As rational the human mind; Reason, they say, belongs to man, But let them prove it if they can.
What is madness? To have erroneous perceptions and to reason correctly from them.
Violence is essentially wordless. and it can begin only where thought and rational communication have broken down.
The brain may take advice, but not the heart.
I am not the opposite of theism. I am right in the middle of those non-believers and believers. It's not even about being agnostic or nastik. Why would I take a name given to me by my opposition? I am just a rationalist.
We can't avoid reasoning; we can only avoid doing it well.
Not to be absolutely certain is, I think, one of the essential things in rationality.
3rd Earl Russell of Kingston
I would describe myself as quite sane and lucid, which is why I'm still alive.
Logic is a wonderful invention. It is so wonderful, people often mistake it for reason. Reason, however, requires sense. Logic requires only consistency.
If passion drives you, let reason hold the reins.
To the extent to which a man is rational, life is the premise directing his actions. To the extent to which he is irrational, the premise directing his actions is death.
The glory of man is that he is a thinking being. It is the nature of man to think and therein he differs from animals
Common sense in an uncommon degree is what the world calls wisdom.
No, no, you're not thinking; you're just being logical.
He who thinks little errs much.
There also appears to be another element in the soul, which, though irrational, yet in a manner participates in rational principle.
The great advantage of being human is that we can employ rational thought and resolve to change our circumstances.
The first step towards philosophy is incredulity.
Since coming back from overseas, this is more of a foreign country than the places overseas. I don't understand it. It's like America has lost faith in rational thought.
Faith is an oasis in the heart which will never be reached by the caravan of thinking.
There are two methods of human activity - and according to which one of these two kinds of activity people mainly follow, are there two kinds of people: One use their reason to learn what is good and what is bad and they act according to this knowledge; the other act as they want to and then they use their reason to prove that that which they did was good and that which they didn't do was bad.