Adapt or perish, now as ever, is nature's inexorable imperative.
Human history is in essence a history of ideas.
Moral indignation is jealousy with a halo.
I want to go ahead of Father Time with a scythe of my own.
No passion in the world is equal to the passion to alter someone else's draft.
There's nothing wrong in suffering, if you suffer for a purpose. Our revolution didn't abolish danger or death. It simply made danger and death worthwhile.
Biologically the species is the accumulation of the experiments of all its successful individuals since the beginning.
The path of social advancement is, and must be, strewn with broken friendships.
Affliction comes to us, not to make us sad but sober; not to make us sorry but wise.
Once the command of the air is obtained by one of the contending armies, the war becomes a conflict between a seeing host and one that is blind.
Leaders should lead as far as they can and then vanish. Their ashes should not choke the fire they have lit.
The New Deal is plainly an attempt to achieve a working socialism and avert a social collapse in America; it is extraordinarily parallel to the successive 'policies' and 'Plans' of the Russian experiment. Americans shirk the word 'socialism', but what else can one call it?
Beauty is in the heart of the beholder.
Every time I see an adult on a bicycle, I no longer despair for the future of the human race.
There is nothing in machinery, there is nothing in embankments and railways and iron bridges and engineering devices to oblige them to be ugly. Ugliness is the measure of imperfection.
Human history becomes more and more a race between education and catastrophe.
History is a race between education and catastrophe.
While there is a chance of the world getting through its troubles, I hold that a reasonable man has to behave as though he were sure of it. If at the end your cheerfulness in not justified, at any rate you will have been cheerful.
We are living in 1937, and our universities, I suggest, are not half-way out of the fifteenth century. We have made hardly any changes in our conception of university organization, education, graduation, for a century - for several centuries.
I must confess that my imagination refuses to see any sort of submarine doing anything but suffocating its crew and floundering at sea.