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Propositions which are disputed,  or to prefer certain tastes,

And when the idea of a movement is strongly excited, it will generally be at least partially performed.— It is so important for us our purpose to recognise how readily that actions readily become associated with other actions, & with various states of the mind, that I will give a good many instances, including some very trifling ones, whether or not the associated tendency is   they be inherited, or not so   ones which equally good for us as more important habits.

It is known to everyone how difficult it is, & often quite or even impossible without repeated trials, to move the limbs in certain opposite directions which have never been habitual practised. Analogous cases occur with sensations,

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[mathematical notes by George Darwin]