One truth stands firm. All that happens in world history rests on something spiritual. If the spiritual is strong, it creates world history. If it is weak, it suffers world history.
Albert SchweitzerVery little of the great cruelty shown by men can really be attributed to cruel instinct. Most of it comes from thoughtlessness or inherited habit. The roots of cruelty, therefore, are not so much strong as widespread. But the time must come when inhumanity protected by custom and thoughtlessness will succumb before humanity championed by thought. Let us work that this time may come.
Albert SchweitzerTo the truly ethical man, all of life is sacred, including forms of life that from the human point of view may seem lower than ours.
Albert Schweitzer