Oliver Wendell Holmes Sr.

Where we love is home, home that our feet may leave, but not our hearts.

For there we loved, and where we love is home,
Home that our feet may leave, but not our hearts,

To be seventy years young is sometimes far more cheerful and hopeful than to be forty years old.

We are all tattooed in our cradles with the beliefs of our tribe; the record may seem superficial, but it is indelible.

Love is the master-key that opens the gates of happiness, of hatred, of jealousy, and, most easily of all, the gate of fear. How terrible is the one fact of beauty!

I have always considered my face a convenience rather than an ornament.

Throw out opium, which the Creator himself seems to prescribe, for we often see the scarlet poppy growing in the cornfields, as if it were foreseen that wherever there is hunger to be fed there must also be a pain to be soothed; throw out a few specifics which our art did not discover, and it is hardly needed to apply; throw out wine, which is a food, and the vapors which produce the miracle of anaesthesia, and I firmly believe that if the whole materia medica [medical drugs], as now used, could be sunk to the bottom of the sea, it would be all the better for mankind,—and all the worse for the fishes.
As quoted in a review of Currents and Counter-currents in Medical Science (1860) in The American Journal of the Medical Sciences, Vol. 40 (1860), p. 467

You can never be too cautious in your prognosis, in the view of the great uncertainty of the course of any disease not long watched, and the many unexpected turns it may take.
I think I am not the first to utter the following caution : —
Beware how you take away hope from any human being. Nothing is clearer than that the merciful Creator intends to blind most people as they pass down into the dark valley. Without very good reasons, temporal or spiritual, we should not interfere with his kind arrangements. It is the height of cruelty and the extreme of impertinence to tell your patient he must die, except you are sure that he wishes to know it, or that there is some particular cause for his knowing it. I should be especially unwilling to tell a child that it could not recover; if the theologians think it necessary, let them take the responsibility. God leads it by the hand to the edge of the precipice in happy unconsciousness, and I would not open its eyes to what he wisely conceals.

-Oliver Wendell Holmes Sr.