We know, in a general sense, what “false” means. It’s the wrong answer on a “true or false” test; it’s saying 2+2=5; it’s saying that the sky is green and the clouds are orange.

That simplicity, however, comes from applying the idea of “truth” to simple, concrete facts. It gets much trickier when we try to apply the idea to the things we love and feel.

Consider, for instance, the idea that “you’ve got to look out for yourself, because no one else is going to.” Is that true? It feels true in a way, and seems to apply to a lot of real-world situations. To some degree, no matter how high-minded we might be, we have to take care of ourselves if we’re going to be any good to anyone else. But if we take that idea and make it central to our lives, will it help us be loving people? Or will it encourage selfishness, which is pretty strong in most of us anyway? Clearly the answer is the latter.

Swedenborg would label that a “falsity,” because it is ultimately a description of how to be selfish. “Love your neighbor as you love yourself” would, by contrast, be labeled a “truth” because it is a description of how to be caring and kind. Basically, statements describing or springing from love of the Lord and love of the neighbor are “truth” and those springing from love of self or love of worldly things are “falsity.”

You might wonder why that is. The fact that “look out for yourself” is selfish doesn’t make it necessarily untrue; it’s a selfish world! But in Swedenborg’s theology, the universe and reality itself are direct products of the Lord’s infinite love, and are thus ultimately expressions of love. The only reason selfishness exists is that the Lord created us with freedom, which includes the ability we have to reject His love and turn it toward ourselves instead. The Lord’s every intention and purpose is to get us turn away from ourselves and toward Him; if we do that, reality can fulfill its loving purpose.

True reality, then, is completely loving, and expressions that reflect and support that loving nature are “true” - they are aligned with reality in its purest, greatest and intended form. Statements that reject and deny that loving nature are “false” because they are contrary to reality’s true form.

But there’s an argument: Couldn’t someone use the idea that “you’ve got to look out for yourself, because no one else is going to” to become strong and self-reliant, in a better position to help others, and use it to be a better person? Yes, they could; ideas that are essentially false can at times be used for good purposes. In a broad application, religious systems can have false ideas about the Lord, but still lead people to good lives and ultimately to heaven. On the flip side, ideas that are essentially true can be used for evil purposes (“love thy neighbor” could prompt giving aid to someone engaged in evil, for instance). “Truth” only becomes truly real when it is married to the desire for good; “falsity” only becomes truly real when it is married to the desire for evil.

(Referencat: Apocalypse Explained 734; Conjugial Love 428; Divine Providence 318; The Apocalypse Explained 526 [1-2]; The New Jerusalem and its Heavenly Doctrine 171)

845. The reason 'the fountains of the deep' means temptation as regards things of the will, and 'the floodgates of heaven' means temptation as regards those of the understanding, is that a person's will is what hell acts upon and not so much upon his understanding unless it has been immersed in evil desires that constitute the will. Evils within the will are what condemn a person and thrust him down to hell, and not so much falsities unless these are coupled with evils, in which case one follows the other. This becomes clear from the fact that so many people who are under the influence of falsities are nevertheless saved, as is the case with very many of the gentiles who have led lives of natural charity and of mercy, as well as Christians who have believed in simplicity of heart. Their very ignorance and simplicity excuse them, for innocence can reside within them.

[2] The situation is different with those who have confirmed themselves in falsities and have consequently pursued such a life of falsity that they reject and spurn all truth. Such a life must first of all be laid waste before any truth and so any good can be implanted. The situation is worse however with people who have so confirmed themselves in falsities resulting from evil desires that falsities and evil desires compose one life. These are the people who plunge into hell. This is the reason why temptation as regards things of the will is meant by 'the fountains of the deep', which are the hells, and temptation as regards those of the understanding by 'the floodgates of heaven', which are the clouds from which the rain falls.