The world of sensations is far larger than the limits of our own sensibility.

What numbers of facts relating to the interplay of natural forces must escape us for want of sufficiently sensitive organs! The unknown--that inexhaustible field in which the men of the future will try their strength--has harvests in store for us beside which our present knowledge would show as no more than a wretched gleaning.

Under the sickle of science will one day fall the sheaves whose grain would appear to-day as senseless paradoxes.

Scientific dreams?
No, if you please, but undeniable positive realities, affirmed by the brute creation, which in certain respects has so great an advantage over us.
Despite his long practice of his calling, despite the scent of the object he was seeking, the _rabassier_ could not divine the presence of the truffle, which ripens in winter under the soil, at a depth of a foot or two; he must have the help of a dog or a pig, whose scent is able to discover the secrets of the soil.

These secrets are known to various insects even better than to our two auxiliaries.