Since opposed principles, or ...

Since opposed principles, or ideologies, are irreconcilable, wars fought over principle will be wars of mutual annihilation. But wars fought for simple greed will be far less destructive, because the aggressor will be careful not to destroy what he is fighting to capture. Reasonable - that is, human - men will always be capable of compromise, but men who have dehumanized themselves by becoming the blind worshipers of an idea or an ideal are fanatics whose devotion to abstractions makes them the enemies of life.
Since opposed principles, or ideologies, are irreconcilable, wars fought over principle will be wars of mutual annihilation. But wars fought for simple greed will be far less destructive, because the aggressor will be careful not to destroy what he is fighting to capture. Reasonable - that is, human - men will always be capable of compromise, but men who have dehumanized themselves by becoming the blind worshipers of an idea or an ideal are fanatics whose devotion to abstractions makes them the enemies of life.

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.