Source: The Great Divorce (1944–1945), Ch. 9, p. 72; part of this has also been rendered in a variant form, and quoted as:
Context: 'But what of the poor Ghosts who never get into the omnibus at all?'
'Everyone who wishes it does. Never fear. There are only two kinds of people in the end: those who say to God, "Thy will be done," and those to whom God says, in the end, "Thy will be done." All that are in Hell, choose it. Without that self-choice there could be no Hell. No soul that seriously and constantly desires joy will ever miss it. Those who seek find. To those who knock it is opened.'

“Neither the temporal succession nor the phantom of what ye might have chosen and didn't is itself Freedom. They are a lens. The picture is a symbol: but it's truer than any philosophical theorem (or, perhaps, than any mystic's vision) that claims to go behind it. For every attempt to see the shape of eternity except through the lens of Time destroys your knowledge of Freedom."”

Clive Staples Lewis book The Great Divorce

Source: The Great Divorce (1944–1945), Ch. 13
Context: "Ye can know nothing of the end of all things, or nothing expressible in those terms. It may be, as the Lord said to the Lady Julian, that all will be well, and all will be well, and all manner of things will be well. But it's ill talking of such questions."
"Because they are too terrible, Sir?"
"No. Because all answers deceive. If ye put the question from within Time and are asking about possibilities, the answer is certain. The choice of ways is before you. Neither is closed. Any man may choose eternal death. Those who choose it will have it. But if ye are trying to leap on into Eternity, if ye are trying to see the final state of all things as it will be (for so ye must speak) when there are no more possibilities left but only the Real, then ye ask what cannot be answered to mortal ears. Time is the very lens through which ye see — small and clear, as men see through the wrong end of a telescope — something that would otherwise be too big for ye to see at all. That thing is Freedom: the gift whereby ye most resemble your Maker and are yourselves parts of eternal reality. But ye can see it only through the lens of Time, in a little clear picture, through the inverted telescope. It is a picture of moments following one another and yourself in each moment making some choice that might have been otherwise. Neither the temporal succession nor the phantom of what ye might have chosen and didn't is itself Freedom. They are a lens. The picture is a symbol: but it's truer than any philosophical theorem (or, perhaps, than any mystic's vision) that claims to go behind it. For every attempt to see the shape of eternity except through the lens of Time destroys your knowledge of Freedom."

“Time is the very lens through which ye see — small and clear, as men see through the wrong end of a telescope — something that would otherwise be too big for ye to see at all. That thing is Freedom: the gift whereby ye most resemble your Maker and are yourselves parts of eternal reality.”

Clive Staples Lewis book The Great Divorce

Source: The Great Divorce (1944–1945), Ch. 13
Context: "Ye can know nothing of the end of all things, or nothing expressible in those terms. It may be, as the Lord said to the Lady Julian, that all will be well, and all will be well, and all manner of things will be well. But it's ill talking of such questions."
"Because they are too terrible, Sir?"
"No. Because all answers deceive. If ye put the question from within Time and are asking about possibilities, the answer is certain. The choice of ways is before you. Neither is closed. Any man may choose eternal death. Those who choose it will have it. But if ye are trying to leap on into Eternity, if ye are trying to see the final state of all things as it will be (for so ye must speak) when there are no more possibilities left but only the Real, then ye ask what cannot be answered to mortal ears. Time is the very lens through which ye see — small and clear, as men see through the wrong end of a telescope — something that would otherwise be too big for ye to see at all. That thing is Freedom: the gift whereby ye most resemble your Maker and are yourselves parts of eternal reality. But ye can see it only through the lens of Time, in a little clear picture, through the inverted telescope. It is a picture of moments following one another and yourself in each moment making some choice that might have been otherwise. Neither the temporal succession nor the phantom of what ye might have chosen and didn't is itself Freedom. They are a lens. The picture is a symbol: but it's truer than any philosophical theorem (or, perhaps, than any mystic's vision) that claims to go behind it. For every attempt to see the shape of eternity except through the lens of Time destroys your knowledge of Freedom."

“No soul that seriously and constantly desires joy will ever miss it. Those who seek find. To those who knock it is opened.'”

Clive Staples Lewis book The Great Divorce

Source: The Great Divorce (1944–1945), Ch. 9, p. 72; part of this has also been rendered in a variant form, and quoted as:
Context: 'But what of the poor Ghosts who never get into the omnibus at all?'
'Everyone who wishes it does. Never fear. There are only two kinds of people in the end: those who say to God, "Thy will be done," and those to whom God says, in the end, "Thy will be done." All that are in Hell, choose it. Without that self-choice there could be no Hell. No soul that seriously and constantly desires joy will ever miss it. Those who seek find. To those who knock it is opened.'

“But what of the poor Ghosts who never get into the omnibus at all?”

Clive Staples Lewis book The Great Divorce

'Everyone who wishes it does. Never fear. There are only two kinds of people in the end: those who say to God, "Thy will be done," and those to whom God says, in the end, "Thy will be done." All that are in Hell, choose it. Without that self-choice there could be no Hell. No soul that seriously and constantly desires joy will ever miss it. Those who seek find. To those who knock it is opened.'

Ch. 9, p. 72; part of this has also been rendered in a variant form, and quoted as:
There are two kinds of people: those who say to God, "Thy will be done," and those to whom God says, "All right, then, have it your way."
The Great Divorce (1944–1945)