The flowers never waste their sweetness on the desert air or, for that matter, on the jungle air. In fact, they waste it only when nobody except a human being is there to smell it. It is for the bugs and a few birds, not for men, that they dye their petals or waft their scents.
True tragedy may be defined as a dramatic work in which the outward failure of the principal personage is compensated for by the dignity and greatness of his character.
Both the cockroach and the bird would get along very well without us, although the cockroach would miss us most.
To be individually righteous is the first of all duties, come what may to ones self, to one's country, to society, and to civilization itself.
Only those within whose own consciousness the sun rise and set, the leaves burgeon and wither, can be said to be aware of what living is.
In the long run our boasted control of nature is a delusion.
A humanist is anyone who rejects the attempt to describe or account for man wholly on the basis of physics, chemistry or animal behaviour.
Not to have known - as most men have not - either the mountain or the desert is not to have known one's self. Not to have known one's self is to have known no one.
If only the fit survive and if the fitter they are the longer they survive, then Volvox must have demonstrated its superb fitness more conclusively than any higher animal ever has.
Happiness is a kind of gratitude and vice versa.
If we are deprived of hope as well as fear, we are compensated by being given an almost endless patience for enduring or simply for waiting.
Nature takes no account of even the most reasonable of human excuses.
There is no such thing as a dangerous woman; there are only susceptible men.
Poetry, mythology, and religion represent the world as man would like to have it, while science represents the world as he gradually comes to discover it.
The mind leaps, and leaps perhaps with a sort of elation, through the immensities of space, but the spirit, frightened and cold, longs to have once more above its head the inverted bowl beyond which may lie whatever paradise its desires may create.
When a man wantonly destroys one of the works of man we call him a vandal. When he destroys one of the works of god we call him a sportsman.
The famous balance of nature is the most extraordinary of all cybernetic systems. Left to itself, it is always self-regulated.
We must not judge the society of the future by considering whether or not we should like to live in it; the question is whether those who have grown up in it will be happier than those who have grown up in our society or those of the past.
It is sometimes easier to head an institute for the study of child guidance than it is to turn one brat into a decent human being.
Metaphysics may be, after all, only the art of being sure of something that is not so and logic only the art of going wrong with confidence.
Two-legged creatures we are supposed to love as we love ourselves. The four-legged, also, can come to seem pretty important. But six legs are too many from the human standpoint.
Life is very persistent and very ingenious in seizing every opportunity.
There is no conceivable human action which custom has not at one time justified and at another condemned.
As machines get to be more and more like men, men will come to be more like machines.
To those who study her, Nature reveals herself as extraordinarily fertile and ingenious in devising means, but she has no ends which the human mind has been able to discover or comprehend.
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