From On Love and Happiness by Pierre Teilhard de Chardin

Love is an adventure and a conquest. It survives and develops like the universe itself only by perpetual discovery. The only right love is that between couples whose passion leads them both, one through the other, to a higher possession of their being.

Put your faith in the spirit which dwells between the two of you. You have each offered yourself to the other as a boundless field of understanding, of enrichment, of mutually increased sensibility.

You will meet above all by entering into and constantly sharing one another’s thoughts, affections, dreams, and prayer. There alone, as you know, in spirit which is arrived at through flesh, you will find no surfeit, no disappointments, no limits.

There alone the skies are ever open for your love; there alone lies the great road ahead.