The structural unity of the parts is such that, if any one of them is displaced or removed, the whole will be disjointed and dis­turbed. For a thing whose presence or absence makes no visible difference is not an organic part of the whole.

When Pleasure is at the bar the jury is not impartial.

...The entire preoccupation of the physicist is with things that contain within themselves a principle of movement and rest.

We have no evidence as yet about mind or the power to think; it seems to be a widely different kind of soul, differing as what is eternal from what is perishable; it alone is capable of existence in isolation from all other psychic powers.

[Prudence] is the virtue of that part of the intellect [the calculative] to which it belongs; and . . . our choice of actions will not be right without Prudence any more than without Moral Virtue, since, while Moral Virtue enables us to achieve the end, Prudence makes us adopt the right means to the end.

Man is the metre of all things, the hand is the instrument of instruments, and the mind is the form of forms.

Here and elsewhere we shall not obtain the best insight into things until we actually see them growing from the beginning.