Our obligation to fight pollution traces the roots of its persuasion to that same moral mountaintop from which my father lent his voice to the voiceless. The pursuit of civil equality in health helped build our environmental laws.

When we go to the store, we bring home more than food - we bring home traces of broader environmental problems. But we can use our shopping carts and dinner plates to help solve some of those problems.

The function of a nutrient is to become transmuted, not to leave unaltered traces.

"In order to know something, you must go back to the source. You have to be critical and wise what are the original roots and not the corrupted outcome but in order to know the truth, you have to examine all angles, all sides, all possible traces of deception, the fortress of protection of hidden elements camouflaged with what it seemed overlapping masks along a river of clear or dirty water. The water flows in varying speed depending on the atmospheric factors and men's interventions in using the flowing water however, the stone remains.

You will be at your best forever, Even now you have good moments. Occasional glimpses of your heavenly self. When you change your baby's diaper, forgive your boss's temper, tolerate your spouse's moodiness, you display traces of saintliness.

The freedom of an unscheduled afternoon brought confusion rather than joy. Julius had always been focused. When he was not seeing patients, other important projects and activities-writing, teaching, tennis, research-clamored for his attention. But today nothing seemed important. He suspected that nothing had ever been important, that his mind had arbitrarily imbued projects with importance and then cunningly covered its traces. Today he saw through the ruse of a lifetime. Today there was nothing important to do, and he ambled aimlessly down Union Street.

Blinding, mineral, shattering silence. You hear nothing but the quiet crunch of stones underfoot. An implacable, definitive silence, like a transparent death. Sky of a perfectly detached blue. You advance with eyes down, reassuring yourself sometimes with a silent mumbling. Cloudless sky, limestone slabs filled with presence: silence nothing can sidestep. Silence fulfilled, vibrant immobility, tensed like a bow. There's the silence of early morning. For long routes in autumn you have to start very early. Outside everything is violet, the dim light slanting through red and gold leaves. It is an expectant silence. You walk softly among huge dark trees, still swathed in traces of blue night. You are almost afraid of awakening. Everything whispering quietly. There's the silence of walks through the snow, muffled footsteps under a white sky. All around you nothing moves. Things and even time itself are iced up, frozen solid in silent immobility. Everything is stopped, unified, thickly padded. A watching silence, white, fluffy, suspended as if in parentheses.

Just as one spoils the stomach by overfeeding and thereby impairs the whole body, so can one overload and choke the mind by giving it too much nourishment. For the more one reads the fewer are the traces left of what one has read; the mind is like a tablet that has been written over and over. Hence it is impossible to reflect; and it is only by reflection that one can assimilate what one has read. If one reads straight ahead without pondering over it later, what has been read does not take root, but is for the most part lost.

It's impossible to move to live to operate at any level without leaving traces bits seemingly meaningless fragments of personal information.

Every animal leaves traces of what it was man alone leaves traces of what he created.