Two short passages of mine, would you mind pointing out my grammatical errors?

1 I assume, each one of us saves a patch of land for our private garden, namely ,our inner world. Man’s intelligence needs to be developed and inner world to be explored. Man’s inner world , besides many other well-known factors ,possibly distinguishes him from animals. Heart is no more than an indispensible organ while inner world is a scenery , which is gradually formed by the continuous work of the outside world on it. Each one pays so much attention to the heart conditions of beloved ones that they are haunted by terror for a slightest ailment of it. However ,not everyone probes into their inner world as well as their beloved ones’ to check whether it is fine or not.

2 The cell phone changes the relations among people. A notice of “ cell phone, off” is usually seen posted on the door of a meeting room. However , the meeting is disrupted by the ringing now and then. We are common people having few important matters to deal with. but we are reluctant to turn off our cell phone. A cell phone symbols our connection with the world and reflects our hunger for socializing. We often notice a scene: A person stops walking all of a sudden .staring at his cell phone , oblivious to where he is , in the middle of a road or by a toilet.

Thank you so much!