What is morality in any given time or place? It is what the majority then and there happen to like and immorality is what they dislike.
No period of history has ever been great or ever can be that does not act on some sort of high, idealistic motives, and idealism in our time has been shoved aside, and we are paying the penalty for it.
The worth of men consists in their liability to persuasion. They can persuade and can be persuaded by the disclosure of alternatives, the better and the worse. Civilization is the maintenance of social order, by its own inherent persuasiveness as embodying the nobler alternative. The recourse to force, however, unavoidable, is a disclosure of the failure of civilization, either in the general society or in a remnant of individuals. Thus in a live civilization there is always an element of unrest.
Without deductive logic science would be entirely useless. It is merely a barren game to ascend from the particular to the general, unless afterwards we can reverse the process and descend from the general to the particular, ascending and descending like angels on Jacob's ladder.
No science can be more secure than the unconscious metaphysics which tacitly it presupposes.
War can protect; it cannot create.
I am sure that one secret of a successful teacher is that he has formulated quite clearly in his mind what the pupil has got to know in precise fashion. He will then cease from half-hearted attempts to worry his pupils with memorizing a lot of irrelevant stuff of inferior importance.
A great society is a society in which its men of business think greatly of their functions.
We think of the number "five" as applying to appropriate groups of any entities whatsoever - to five fishes, five children, five apples, five days... We are merely thinking of those relationships between those two groups which are entirely independent of the individual essences of any of the members of either group. This is a very remarkable feat of abstraction; and it must have taken ages for the human race to rise to it
To see what is general in what is particular, and what is permanent in what is transitory, is the aim of scientific thought.
In the history of the world the prize has not gone to those species which specialized in methods of violence, or even in defensive armor. In fact, nature began with producing animals encased in hard shells for defense against the ill of life. But smaller animals, without external armor, warm-blooded, sensitive, alert, have cleared those monsters off the face of the earth.
There is no greater hindrance to the progress of thought than an attitude of irritated party-spirit.
Order is not sufficient. What is required, is something much more complex. It is order entering upon novelty; so that the massiveness of order does not degenerate into mere repetition; and so that the novelty is always reflected upon a background of system.
Governments are best classified by considering who are the 'somebodies' they are in fact endeavouring to satisfy.
There is a technique, a knack, for thinking, just as there is for doing other things. You are not wholly at the mercy of your thoughts, any more than they are you. They are a machine you can learn to operate.
No Roman ever died in contemplation over a geometrical diagram.
Art attracts us only by what it reveals of our most secret self.
Rationalism is an adventure in the clarification of thought.
Scientists animated by the purpose of proving that they are purposeless constitute an interesting subject for study.
Knowledge keeps no better than fish.
No reason can be given for the nature of God, because that nature is the ground of rationality.
Education should turn out the pupil with something he knows well and something he can do well.
In modern times the belief that the ultimate explanation of all things was to be found in Newtonian mechanics was an adumbration of the truth that all science, as it grows towards perfection, becomes mathematical in its ideas.
Inventive genius requires pleasurable mental activity as a condition for its vigorous exercise
The greatest invention of the nineteenth century was the invention of the method of invention.
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