Here are a few quotes to think about:
Guerir quelquefois, soulager souvent, consoler toujours. translation: Cure sometimes, relieve often, comfort always. A french proverb on the goals of a doctor.
In science it often happens that scientists say, "You know that's a really good argument; my position is mistaken," and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
As for you Gilgamesh, fill your belly with good things; day and night, night and day, dance and be merry, feast and rejoice. Let your clothes be fresh, bathe yourself in water, cherish the little child that holds your hand, and make your wife happy in your embrace; for this too is the lot of man.
-Epic of Gilgamesh (one of the oldest books)
Every saint has a past and every sinner has a future.
Thousands of candles can be lighted from a single candle, and the life of the candle will not be shortened. Happiness never decreases by being shared.