1. “Intelligence is what you use when you don’t know what to do: When neither innateness nor learning has prepared you for the particular situation.”
2. “Scientific knowledge is in perpetual evolution; it finds itself changed from one day to the next.”
3. “Logical reasoning is an argument which we have with ourselves and which reproduces internally the features of a real argument.”
4. “Logical activity is not the whole of intelligence. One can be intelligent without being particularly logical.”
5. “From the moral as from the intellectual point of view, the child is born neither good nor bad but master of his destiny.”
6. “What we see changes what we know. What we know changes what we see.”
7. “Play is the answer to how anything new comes about.”
8. “Every acquisition of accommodation becomes material for assimilation, but assimilation always resists new accommodations.”
9. “Scientific thought, then, is not momentary; it is not a static instance; it is a process.”
10. “The current state of knowledge is a moment in history, changing just as rapidly as the state of knowledge in the past has ever changed and in many instances, more rapidly.”
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