It is up to you to prove that human beings do not have to be prowling wolves or sly lynxes, but can be rational, just, and kindly members of a commonwealth.

A man has free choice to the extent that he is rational

Man can sin against nature in two ways. First, when he sins against his specific rational nature, acting contrary to reason. In this sense, we can say that every sin is a sin against man’s nature, because it is against man’s right reason.

The more complex the world situation becomes, the more scientific and rational analysis you have to have, the less you can do with simple good will and sentiment.

In short, if your average voter had five key issues in mind, scored each candidate on them, and weighted them in order of importance, it was easy to understand how perfectly reasonable and rational people might have voted for Donald Trump without being deplorable bigots.

Those suffering from Trump Derangement Syndrome cannot see that for 63 million Americans, voting for Trump was an obviously rational decision.

Mankind has failed miserably in its effort to devise a rational system of government. The art of government is the exclusive possession of quacks and frauds. It has been so since the earliest days, and it will probably remain so until the end of time.

I’m a member of no party. I have no ideology. I’m a rationalist.

Faith must go beyond rational thinking in order to truly blossom.

Rather than comparing [war] to art we could more accurately compare it to commerce, which is also a conflict of human interests and activities; and it is still closer to politics, which in turn may be considered as a kind of commerce on a larger scale.

Reason is the substance of the universe. The design of the world is absolutely rational.

Indeed, in view of its function, religion stands in greater need of a rational foundation of its ultimate principles than even the dogmas of science.

Everything that exists is rational; everything rational exists.

A rational man never distorts or corrupts his own standards and judgment in order to appeal to the irrationality, stupidity, or dishonesty of others.

Rationalization is a process of not perceiving reality, but of attempting to make reality fit one’s emotions.

When I disagree with a rational man, I let reality be our final arbiter; if I am right, he will learn; if I am wrong, I will; one of us will win, but both will profit.

What a man really says when he says that someone else can be persuaded by force, is that he himself is incapable of more rational means of communication.

Rational thoughts never drive people’s creativity the way emotions do.

There are only three types of people; those who have found God and serve him; those who have not found God and seek him, and those who live not seeking, or finding him. The first are rational and happy; the second unhappy and rational, and the third foolish and unhappy.