“I wanted certainty in the kind of way in which people want religious faith. I thought that certainty is more likely to be found in mathematics than elsewhere. But I discovered that many mathematical demonstrations, which my teachers expected me to accept, were full of fallacies, and that, if certainty were indeed discoverable in mathematics, it would be in a new field of mathematics, with more solid foundations than those that had hitherto been thought secure. But as the work proceeded, I was continually reminded of the fable about the elephant and the tortoise. having constructed an elephant upon which the mathematical world could rest, I found the elephant tottering, and proceeded to construct a tortoise to keep the elephant from falling. But the tortoise was no more secure than the elephant, and after some twenty years of very arduous toil, I came to the conclusion that there was nothing more that I could do in the way of making mathematical knowledge indubitable.”
“It is the duty of all who care for their country or for civilisation to point out that we cannot further any of our ideals by participation in the next war, and that we ought therefore to resist all measures based upon the assumption that we shall take part in it. In the late war it was arguable that victory, being possible, might do some good. With the modern technique of gas attack, no belligerent can hope for victory. Absolute pacifism, therefore, in every country, in which it is politically possible, is the only sane policy both for Governments and individuals.”
“The criminal law has, from the point of view of thwarted virtue, the merit of allowing an outlet for those impulses of aggression which cowardice, disguised as morality, restrains in their more spontaneous forms. War has the same merit. You must not kill you neighbor, whom perhaps you genuinely hate, but by a little propaganda this hate can be transferred to some foreign nation, against whom all your murderous impulses become patriotic heroism.”
“I should like to believe my people's religion, which was just what I could wish, but alas, it is impossible. I have really no religion, for my God, being a spirit shown merely by reason to exist, his properties utterly unknown, is no help to my life. I have not the parson's comfortable doctrine that every good action has its reward, and every sin is forgiven. My whole religion is this: do every duty, and expect no reward for it, either here or hereafter.”
“In democratic countries, the most important private organizations are economic. Unlike secret societies, they are able to exercize their terrorism without illegality, since they do not threaten to kill their enemies, but only to starve them.”
“People seem good while they are oppressed, but they only wish to become oppressors in their turn: life is nothing but a competition to be the criminal rather than the victim.”
“Cuando llegue la hora de mi muerte, no sentiré haber vivido en vano. Habré visto los crepúsculos rojos de la tarde, el rocío de la mañana y la nieve brillando bajo los rayos del sol universal; habré olido la lluvia después de la sequía y habré oído el Atlántico tormentoso batir contra las costas graníticas de Cornualles.”
“I am sorry to say that at the moment I am so busy as to be convinced that life has no meaning whatever... I do not see that we can judge what would be the result of the discovery of truth, since none has hitherto been discovered.”
“Está claro que las causas psicológicas de la infelicidad son muchas y variadas. Pero todas tienen algo en común. La típica persona infeliz es aquella que, habiéndose visto privada de joven de alguna satisfacción normal, ha llegado a valorar este único tipo de satisfacción más que cualquier otro, y por tanto ha encauzado su vida en una única dirección, dando excesiva importancia a los logros y ninguna a las actividades relacionadas con ellos.”
“Se você acha que sua crença é baseada na razão, você a defenderá com argumentos e não pela força, e renunciará a ela se seus argumentos se mostrarem inválidos. Mas se sua crença se baseia na fé, você perceberá que a discussão é inútil e, portanto, recorrerá à força, ou na forma de perseguição ou anestesiando e distorcendo as mentes das crianças no que é chamado 'educação'.”
“If you think that your belief is based upon reason, you will support it by argument, rather than by persecution, and will abandon it if the argument goes against you. But if your belief is based on faith, you will realize that argument is useless, and will therefore resort to force either in the form of persecution or by stunting and distorting the minds of the young in what is called ""education"". This last is particularly dastardly, since it takes advantage of the defencelessness of immature minds. Unfortunately it is practiced in greater or less degree in the schools of every civilised country.”