"心が単純なアイデアに力を発揮する行為は、主に次の三つです。1. 複数の単純なアイデアを組み合わせて、一つの複合的なアイデアにすることです。このようにしてすべての複雑なアイデアが作られます。2. 次に、二つのアイデア、単純なものでも複雑なものでも、一緒にし、同時にそれらを観察することによって、結合せずに、それらの関係のすべてのアイデアを得ます。3. 三つ目は、現実の存在においてそれに伴う他のすべてのアイデアからそれらを分離することです。これは抽象と呼ばれ、このようにしてすべての一般的なアイデアが作られます。"

Simplified Meaning:

This quote is explaining how our mind works with ideas in three important ways. First, our mind takes simple ideas and combines them to form more complex ideas. For example, when we think of a house, it’s a mix of simple ideas like walls, roof, doors, and windows coming together to make the whole picture. Second, our mind compares different ideas by placing them side by side. For instance, if you compare a dog and a cat, you look at both their similarities and differences without merging them into one new idea. Third, our mind separates certain aspects of ideas from others to focus on general concepts. For example, when we think of the concept of 'roundness,' we ignore other attributes like color or size, and focus only on the shape. This process helps us understand complex concepts and make sense of the world. By using these mental actions, we can improve problem-solving, creativity, and clear thinking in everyday life.