This quote, "Everything comes to us from others. To Be is to belong to someone," suggests that our identities, experiences, and knowledge are intrinsically linked to our relationships and interactions with others. It emphasizes that our existence is not solitary, but rather interwoven with the lives of those around us.

The first part of the quote, "Everything comes to us from others," signifies that all our knowledge, experiences, and even our personalities are shaped by our interactions with others. We learn from people around us, we adapt to their behaviors, and we absorb their wisdom. This is not to say that we don’t have individuality, but rather our individuality is a complex amalgamation of influences from others.

The second part, "To Be is to belong to someone," suggests that our existence is validated through our relationships. This doesn’t mean that we are owned or controlled by others, but rather our lives gain meaning and purpose through our connections with others. We find a sense of belonging, purpose, and identity in our relationships, whether they’re familial, platonic, or romantic.

In today’s world, this idea is particularly relevant given our increasing interconnectedness through technology and globalization. We are constantly influenced by others, directly or indirectly, through social media, news, and various forms of communication. Our ideas, thoughts, and even feelings are often shaped by what we see, hear, and read from others.

In terms of personal development, this quote underlines the importance of healthy and positive relationships for growth and self-discovery. It encourages us to be open to learning from others, to seek diverse perspectives, and to value the relationships we form. It also reminds us to be mindful of how we influence others with our actions and words. It pushes us to understand that our personal growth is intertwined with the growth of the people around us, and that we should strive to have a positive impact on them.