It is no proof of a man's understanding to be able to affirm whatever he pleases; but to be able to discern that what is true is true, and that what is false is false, this is the mark and character of intelligence.
It can in no sense be said that heaven is outside of any one; it is within ... and a man, also, so far as he receives heaven, is a recipient, a heaven, and an angel.
Man was so created by the Lord as to be able while living in the body to speak with spirits and angels, as in fact was done in the most ancient times; for, being a spirit clothed with a body, he is one with them
Hell and Heaven are near man, yes, in him; and every man after death goes to that Hell or heaven in which he was, or to his spirit, during his abode in the world.
If we would accept heaven's life, we need by all means to live in the world and to participate in its duties and affairs. In this way, we accept a spiritual life by means of our moral and civic life; and there is no other way a spiritual life can be formed within us, no other way our spirits can be prepared for heaven. This is because living an inner life and not an outer life at the same time is like living in a house that has no foundation, that gradually either settles or develops gaping cracks or totters until it collapses.