Teilhard de Chardin's knowledge of himself in the Silence is powerfully described in the DIVINE MILIEU:
We must try to penetrate our most secret self, and examine our being from all sides. Let us try, patiently, to perceive the ocean of forces to which we are subjected and in which our growth is, as it were, steeped ... And so, for the first time in my life perhaps (although I am supposed to meditate every day!), I took the lamp and, leaving the zone of everyday occupations and relationships where everything seems clear, I went down into my inmost self, to the deep abyss whence I feel dimly that my power of action emanates. But as I moved further and further away from the conventual, I became aware that I was losing contact with myself. At each step of the descent, a new person was disclosed within me of whose name I was no longer sure, and who no longer obeyed me. And when I had to stop my exploration because the path faded from beneath my steps, I found a bottomless abyss at my feet ... and, if someone saved me, it was hearing the voice of the Gospel speaking to me from the depth of the night: ego sum, noli timere ... It is I, be not afraid!
All things belonging to the earth will never change—the leaf, the blade, the flower, the wind that cries and sleeps and wakes again, the trees whose stiff whose arms clash and tremble in the dark . . . all things proceeding from the earth to seasons, all things that lapse and change and come again upon the earth—these things will always be the same, for they come up from the earth that never changes, they go back into the earth that lasts forever. Only the earth endures, but it endures forever . . . Under the pavements trembling like a pulse, under the buildings trembling like a cry, under the waste of time, under the hoof of the beast above the broken bones of cities, there will be something growing like a flower, something bursting from the earth again, forever deathless, faithful coming into life again like April.
~ from YOU CAN’T GO HOME AGAIN by Thomas Wolfe, quoted in An Almanac for the Soul by Marv and Nancy Hiles