Truth in science can be defined as the working hypothesis best suited to open the way to the next better one.

If you confine yourself to this Skinnerian technique, you study nothing but the learning apparatus and you leave out everything that is different in octopi, crustaceans, insects and vertebrates. In other words, you leave out everything that makes a pigeon a pigeon, a rat a rat, a man a man, and, above all, a healthy man healthy and a sick man sick.

We had better dispense with the personification of evil, because it leads, all too easily, to the most dangerous kind of war: religious war.

Few animals display their mood via facial expressions as distinctly as cats.

Every mutation through a new combination of genetic factors that provides the organism with a new opportunity for coming to terms with the conditions of its environment signifies no more and no less than that new information about this environment has got into that organic system. Adaptation is essentially a cognitive process.

Truth in science can be defined as the working hypothesis best suited to open the way to the next better one.

Natural selection does not give any preference at all to anything that, in the long run, could be advantageous for the species but blindly rewards everything that, momentarily, affords greater procreative success.