This soldier, I realized, must have had friends at home and in his regiment; yet he lay there deserted by all except his dog. I looked on, unmoved, at battles which decided the future of nations. Tearless, I had given orders which brought death to thousands. Yet here I was stirred, profoundly stirred, stirred to tears. And by what? By the grief of one dog.

Intelligence plus character - that is the goal of true education.

Silence is the only answer you should give to the fools. Where ignorance speaks, intelligence should not give advices.

Everything has its limit - iron ore cannot be educated into gold.

It is even a difficult thing for him [humans] to admit to himself that the insect or the bird perceives an entirely different world from the one that man does.

Everything which distinguishes man from the animals depends upon this ability to volatilize perceptual metaphors in a schema, and thus to dissolve an image into a concept.