但这些监督必须具备应有的品德和正确观察事物的能力。

But such overseers must be of aproper character quality and perspective.

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当然，若要正确观察他意识和表象中的事实，就要他事先在注意力和抽象力方面有相当程度的训练。

We assume of course that his powers of attention and abstraction have undergone a previous training, enabling him to observe correctly the evidence of his consciousness and his conceptions.

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掌握色彩的三要素是正确观察色彩的关键，正确的比较、恰当的步骤是学习绘画者必须具备的素质。

To master the three factors is the key to observe colours correctly. At the same time, these who want to learn painting should have the necessary quality of correct comparison and proper steps.

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