youth looks at its world and age looks through it; youth must get busy on problems whose outlines stand single and strenuous before it, while age can, with luck, achieve a cosmic private harmony unsuited for action as a rule.

I have long come to believe that, more than any other destruction, our word-recklessness is endangering the future of us all.

Your real progressives are never fair: they are never sufficiently neutral.

A pen and a notebook and a reasonable amount of discrimination will change a journey from a mere annual into a perennial, its pleasures and pains renewable at will.

every frontier is doomed to produce an opposition beyond it. Nothing short of the universal can build the unfenced peace.

Curiosity is the one thing invincible in Nature.

All the feeling which my father could not put into words was in his hand-any dog, child or horse would recognize the kindness of it.