If to enjoy even an enjoyable ...

If to enjoy even an enjoyable present we must have the assurance of a happy future, we are crying for the moon. We have no such assurance. The best predictions are still matters of probability rather than certainty, and to the best of our knowledge every one of us is going to suffer and die. If, then, we cannot live happily without an assured future, we are certainly not adapted to living in a finite world where, despite the best plans, accidents will happen, and where death comes at the end.
If to enjoy even an enjoyable present we must have the assurance of a happy future, we are crying for the moon. We have no such assurance. The best predictions are still matters of probability rather than certainty, and to the best of our knowledge every one of us is going to suffer and die. If, then, we cannot live happily without an assured future, we are certainly not adapted to living in a finite world where, despite the best plans, accidents will happen, and where death comes at the end.

Quotes from the same author

I have realized that the past and future are real illusions, that they exist in the present, which is what there is and all there is.
We cannot be more sensitive to pleasure without being more sensitive to pain.
Things are as they are. Looking out into it the universe at night, we make no comparisons between right and wrong stars, nor between well and badly arranged constellations.
And the attitude of faith is the very opposite of clinging to belief, of holding on.
But at any rate, the point is that God is what nobody admits to being, and everybody really is.